Color
Size
Defender One Snow White Ski Helmet + Defender 1000 Pro Nardo Ski Goggle Combo - Snow White + Nardo / M-L(55-59CM)
Shipping calculated at checkout
Buy with Confidence
Our 60-day fit guarantee, free exchange & no-hassle returns
Size Guide
To ensure optimal comfort and protection, please refer to the Dotphy size guide. We recommend trying on the product whenever possible. Each helmet product page includes internal dimension ratios to help you better match your head shape.
MTB Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–58 cm |
| L | 59–62 cm |
Fit Tip: MTB Helmet
MTB helmets should fit snugly for technical trails and bumpy terrain. Make sure the helmet sits low and level, with minimal movement when shaken. Choose a size that provides firm coverage without pressure.
Road Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–58 cm |
| L | 59–61 cm |
Fit Tip: Road Helmet
Road cycling helmets prioritize aerodynamics and lightweight feel. The helmet should sit close to the head without gaps, secure during head movement, and allow airflow for long-distance comfort.
Full-Face MTB Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–58 cm |
| L | 59–61 cm |
Fit Tip: Full-Face Helmet
Full-face helmets should fit snugly around the cheeks and crown without gaps. Ensure the chin bar feels secure but not tight, and there’s no excessive movement during head turns or jumps.
Snow Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–59 cm |
| L | 59–63 cm |
Fit Tip: Snow Helmet
Snow helmets need room for warmth and goggle compatibility. Make sure the fit is not too tight when worn with a balaclava or beanie. The helmet should sit comfortably above the eyebrows and align with goggle straps.
Asian Fit Note
Dotphy helmets are developed with head shape diversity in mind. Asian users typically have a rounder head shape and shorter front-to-back ratio compared to European users. Each helmet product page includes internal fit dimensions to help ensure the best match for your head shape. If you fall between sizes, prioritize internal width and frontal coverage for comfort.
How to Measure Your Head
- Use a soft measuring tape or string.
- Wrap it around your head about 2 cm above the eyebrows and ears, keeping it level.
- Check your measurement in centimeters and compare it to the chart above.
Tip: Try on the helmet with the fit system loosened first. The shell should rest evenly around your head, with adjustability to tighten securely without discomfort.
Snow Goggle Size Chart
Choose the right goggle frame for your face size and helmet fit. Goggles should create a full seal around your eyes without pressure points or gaps.
Small Frame
Best for youth and adults with narrow or smaller faces.
Medium Frame
The most common size for adults. Unisex fit with balanced field of view and comfort.
Large / Oversized Frame
Offers maximum peripheral vision, ideal for broader faces. Ensure helmet compatibility before purchase.
OTG (Over-the-Glasses) Goggles
Designed for use over prescription eyewear. These frames offer extra internal space for both glasses and airflow.
Note: Size and fit recommendations are provided for guidance only. Actual fit may vary by model. Please refer to the individual product pages for specific internal sizing details.
Size Guide
To ensure optimal comfort and protection, please refer to the Dotphy size guide. We recommend trying on the product whenever possible. Each helmet product page includes internal dimension ratios to help you better match your head shape.
MTB Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–58 cm |
| L | 59–62 cm |
Fit Tip: MTB Helmet
MTB helmets should fit snugly for technical trails and bumpy terrain. Make sure the helmet sits low and level, with minimal movement when shaken. Choose a size that provides firm coverage without pressure.
Road Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–58 cm |
| L | 59–61 cm |
Fit Tip: Road Helmet
Road cycling helmets prioritize aerodynamics and lightweight feel. The helmet should sit close to the head without gaps, secure during head movement, and allow airflow for long-distance comfort.
Full-Face MTB Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–58 cm |
| L | 59–61 cm |
Fit Tip: Full-Face Helmet
Full-face helmets should fit snugly around the cheeks and crown without gaps. Ensure the chin bar feels secure but not tight, and there’s no excessive movement during head turns or jumps.
Snow Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–59 cm |
| L | 59–63 cm |
Fit Tip: Snow Helmet
Snow helmets need room for warmth and goggle compatibility. Make sure the fit is not too tight when worn with a balaclava or beanie. The helmet should sit comfortably above the eyebrows and align with goggle straps.
Asian Fit Note
Dotphy helmets are developed with head shape diversity in mind. Asian users typically have a rounder head shape and shorter front-to-back ratio compared to European users. Each helmet product page includes internal fit dimensions to help ensure the best match for your head shape. If you fall between sizes, prioritize internal width and frontal coverage for comfort.
How to Measure Your Head
- Use a soft measuring tape or string.
- Wrap it around your head about 2 cm above the eyebrows and ears, keeping it level.
- Check your measurement in centimeters and compare it to the chart above.
Tip: Try on the helmet with the fit system loosened first. The shell should rest evenly around your head, with adjustability to tighten securely without discomfort.
Snow Goggle Size Chart
Choose the right goggle frame for your face size and helmet fit. Goggles should create a full seal around your eyes without pressure points or gaps.
Small Frame
Best for youth and adults with narrow or smaller faces.
Medium Frame
The most common size for adults. Unisex fit with balanced field of view and comfort.
Large / Oversized Frame
Offers maximum peripheral vision, ideal for broader faces. Ensure helmet compatibility before purchase.
OTG (Over-the-Glasses) Goggles
Designed for use over prescription eyewear. These frames offer extra internal space for both glasses and airflow.
Note: Size and fit recommendations are provided for guidance only. Actual fit may vary by model. Please refer to the individual product pages for specific internal sizing details.
Size Guide
To ensure optimal comfort and protection, please refer to the Dotphy size guide. We recommend trying on the product whenever possible. Each helmet product page includes internal dimension ratios to help you better match your head shape.
MTB Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–58 cm |
| L | 59–62 cm |
Fit Tip: MTB Helmet
MTB helmets should fit snugly for technical trails and bumpy terrain. Make sure the helmet sits low and level, with minimal movement when shaken. Choose a size that provides firm coverage without pressure.
Road Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–58 cm |
| L | 59–61 cm |
Fit Tip: Road Helmet
Road cycling helmets prioritize aerodynamics and lightweight feel. The helmet should sit close to the head without gaps, secure during head movement, and allow airflow for long-distance comfort.
Full-Face MTB Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–58 cm |
| L | 59–61 cm |
Fit Tip: Full-Face Helmet
Full-face helmets should fit snugly around the cheeks and crown without gaps. Ensure the chin bar feels secure but not tight, and there’s no excessive movement during head turns or jumps.
Snow Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–59 cm |
| L | 59–63 cm |
Fit Tip: Snow Helmet
Snow helmets need room for warmth and goggle compatibility. Make sure the fit is not too tight when worn with a balaclava or beanie. The helmet should sit comfortably above the eyebrows and align with goggle straps.
Asian Fit Note
Dotphy helmets are developed with head shape diversity in mind. Asian users typically have a rounder head shape and shorter front-to-back ratio compared to European users. Each helmet product page includes internal fit dimensions to help ensure the best match for your head shape. If you fall between sizes, prioritize internal width and frontal coverage for comfort.
How to Measure Your Head
- Use a soft measuring tape or string.
- Wrap it around your head about 2 cm above the eyebrows and ears, keeping it level.
- Check your measurement in centimeters and compare it to the chart above.
Tip: Try on the helmet with the fit system loosened first. The shell should rest evenly around your head, with adjustability to tighten securely without discomfort.
Snow Goggle Size Chart
Choose the right goggle frame for your face size and helmet fit. Goggles should create a full seal around your eyes without pressure points or gaps.
Small Frame
Best for youth and adults with narrow or smaller faces.
Medium Frame
The most common size for adults. Unisex fit with balanced field of view and comfort.
Large / Oversized Frame
Offers maximum peripheral vision, ideal for broader faces. Ensure helmet compatibility before purchase.
OTG (Over-the-Glasses) Goggles
Designed for use over prescription eyewear. These frames offer extra internal space for both glasses and airflow.
Note: Size and fit recommendations are provided for guidance only. Actual fit may vary by model. Please refer to the individual product pages for specific internal sizing details.
Size Guide
To ensure optimal comfort and protection, please refer to the Dotphy size guide. We recommend trying on the product whenever possible. Each helmet product page includes internal dimension ratios to help you better match your head shape.
MTB Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–58 cm |
| L | 59–62 cm |
Fit Tip: MTB Helmet
MTB helmets should fit snugly for technical trails and bumpy terrain. Make sure the helmet sits low and level, with minimal movement when shaken. Choose a size that provides firm coverage without pressure.
Road Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–58 cm |
| L | 59–61 cm |
Fit Tip: Road Helmet
Road cycling helmets prioritize aerodynamics and lightweight feel. The helmet should sit close to the head without gaps, secure during head movement, and allow airflow for long-distance comfort.
Full-Face MTB Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–58 cm |
| L | 59–61 cm |
Fit Tip: Full-Face Helmet
Full-face helmets should fit snugly around the cheeks and crown without gaps. Ensure the chin bar feels secure but not tight, and there’s no excessive movement during head turns or jumps.
Snow Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–59 cm |
| L | 59–63 cm |
Fit Tip: Snow Helmet
Snow helmets need room for warmth and goggle compatibility. Make sure the fit is not too tight when worn with a balaclava or beanie. The helmet should sit comfortably above the eyebrows and align with goggle straps.
Asian Fit Note
Dotphy helmets are developed with head shape diversity in mind. Asian users typically have a rounder head shape and shorter front-to-back ratio compared to European users. Each helmet product page includes internal fit dimensions to help ensure the best match for your head shape. If you fall between sizes, prioritize internal width and frontal coverage for comfort.
How to Measure Your Head
- Use a soft measuring tape or string.
- Wrap it around your head about 2 cm above the eyebrows and ears, keeping it level.
- Check your measurement in centimeters and compare it to the chart above.
Tip: Try on the helmet with the fit system loosened first. The shell should rest evenly around your head, with adjustability to tighten securely without discomfort.
Snow Goggle Size Chart
Choose the right goggle frame for your face size and helmet fit. Goggles should create a full seal around your eyes without pressure points or gaps.
Small Frame
Best for youth and adults with narrow or smaller faces.
Medium Frame
The most common size for adults. Unisex fit with balanced field of view and comfort.
Large / Oversized Frame
Offers maximum peripheral vision, ideal for broader faces. Ensure helmet compatibility before purchase.
OTG (Over-the-Glasses) Goggles
Designed for use over prescription eyewear. These frames offer extra internal space for both glasses and airflow.
Note: Size and fit recommendations are provided for guidance only. Actual fit may vary by model. Please refer to the individual product pages for specific internal sizing details.
Choose options
Shipping calculated at checkout
Buy with Confidence
Our 60-day fit guarantee, free exchange & no-hassle returns
Size Guide
To ensure optimal comfort and protection, please refer to the Dotphy size guide. We recommend trying on the product whenever possible. Each helmet product page includes internal dimension ratios to help you better match your head shape.
MTB Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–58 cm |
| L | 59–62 cm |
Fit Tip: MTB Helmet
MTB helmets should fit snugly for technical trails and bumpy terrain. Make sure the helmet sits low and level, with minimal movement when shaken. Choose a size that provides firm coverage without pressure.
Road Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–58 cm |
| L | 59–61 cm |
Fit Tip: Road Helmet
Road cycling helmets prioritize aerodynamics and lightweight feel. The helmet should sit close to the head without gaps, secure during head movement, and allow airflow for long-distance comfort.
Full-Face MTB Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–58 cm |
| L | 59–61 cm |
Fit Tip: Full-Face Helmet
Full-face helmets should fit snugly around the cheeks and crown without gaps. Ensure the chin bar feels secure but not tight, and there’s no excessive movement during head turns or jumps.
Snow Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–59 cm |
| L | 59–63 cm |
Fit Tip: Snow Helmet
Snow helmets need room for warmth and goggle compatibility. Make sure the fit is not too tight when worn with a balaclava or beanie. The helmet should sit comfortably above the eyebrows and align with goggle straps.
Asian Fit Note
Dotphy helmets are developed with head shape diversity in mind. Asian users typically have a rounder head shape and shorter front-to-back ratio compared to European users. Each helmet product page includes internal fit dimensions to help ensure the best match for your head shape. If you fall between sizes, prioritize internal width and frontal coverage for comfort.
How to Measure Your Head
- Use a soft measuring tape or string.
- Wrap it around your head about 2 cm above the eyebrows and ears, keeping it level.
- Check your measurement in centimeters and compare it to the chart above.
Tip: Try on the helmet with the fit system loosened first. The shell should rest evenly around your head, with adjustability to tighten securely without discomfort.
Snow Goggle Size Chart
Choose the right goggle frame for your face size and helmet fit. Goggles should create a full seal around your eyes without pressure points or gaps.
Small Frame
Best for youth and adults with narrow or smaller faces.
Medium Frame
The most common size for adults. Unisex fit with balanced field of view and comfort.
Large / Oversized Frame
Offers maximum peripheral vision, ideal for broader faces. Ensure helmet compatibility before purchase.
OTG (Over-the-Glasses) Goggles
Designed for use over prescription eyewear. These frames offer extra internal space for both glasses and airflow.
Note: Size and fit recommendations are provided for guidance only. Actual fit may vary by model. Please refer to the individual product pages for specific internal sizing details.
Size Guide
To ensure optimal comfort and protection, please refer to the Dotphy size guide. We recommend trying on the product whenever possible. Each helmet product page includes internal dimension ratios to help you better match your head shape.
MTB Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–58 cm |
| L | 59–62 cm |
Fit Tip: MTB Helmet
MTB helmets should fit snugly for technical trails and bumpy terrain. Make sure the helmet sits low and level, with minimal movement when shaken. Choose a size that provides firm coverage without pressure.
Road Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–58 cm |
| L | 59–61 cm |
Fit Tip: Road Helmet
Road cycling helmets prioritize aerodynamics and lightweight feel. The helmet should sit close to the head without gaps, secure during head movement, and allow airflow for long-distance comfort.
Full-Face MTB Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–58 cm |
| L | 59–61 cm |
Fit Tip: Full-Face Helmet
Full-face helmets should fit snugly around the cheeks and crown without gaps. Ensure the chin bar feels secure but not tight, and there’s no excessive movement during head turns or jumps.
Snow Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–59 cm |
| L | 59–63 cm |
Fit Tip: Snow Helmet
Snow helmets need room for warmth and goggle compatibility. Make sure the fit is not too tight when worn with a balaclava or beanie. The helmet should sit comfortably above the eyebrows and align with goggle straps.
Asian Fit Note
Dotphy helmets are developed with head shape diversity in mind. Asian users typically have a rounder head shape and shorter front-to-back ratio compared to European users. Each helmet product page includes internal fit dimensions to help ensure the best match for your head shape. If you fall between sizes, prioritize internal width and frontal coverage for comfort.
How to Measure Your Head
- Use a soft measuring tape or string.
- Wrap it around your head about 2 cm above the eyebrows and ears, keeping it level.
- Check your measurement in centimeters and compare it to the chart above.
Tip: Try on the helmet with the fit system loosened first. The shell should rest evenly around your head, with adjustability to tighten securely without discomfort.
Snow Goggle Size Chart
Choose the right goggle frame for your face size and helmet fit. Goggles should create a full seal around your eyes without pressure points or gaps.
Small Frame
Best for youth and adults with narrow or smaller faces.
Medium Frame
The most common size for adults. Unisex fit with balanced field of view and comfort.
Large / Oversized Frame
Offers maximum peripheral vision, ideal for broader faces. Ensure helmet compatibility before purchase.
OTG (Over-the-Glasses) Goggles
Designed for use over prescription eyewear. These frames offer extra internal space for both glasses and airflow.
Note: Size and fit recommendations are provided for guidance only. Actual fit may vary by model. Please refer to the individual product pages for specific internal sizing details.
Size Guide
To ensure optimal comfort and protection, please refer to the Dotphy size guide. We recommend trying on the product whenever possible. Each helmet product page includes internal dimension ratios to help you better match your head shape.
MTB Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–58 cm |
| L | 59–62 cm |
Fit Tip: MTB Helmet
MTB helmets should fit snugly for technical trails and bumpy terrain. Make sure the helmet sits low and level, with minimal movement when shaken. Choose a size that provides firm coverage without pressure.
Road Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–58 cm |
| L | 59–61 cm |
Fit Tip: Road Helmet
Road cycling helmets prioritize aerodynamics and lightweight feel. The helmet should sit close to the head without gaps, secure during head movement, and allow airflow for long-distance comfort.
Full-Face MTB Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–58 cm |
| L | 59–61 cm |
Fit Tip: Full-Face Helmet
Full-face helmets should fit snugly around the cheeks and crown without gaps. Ensure the chin bar feels secure but not tight, and there’s no excessive movement during head turns or jumps.
Snow Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–59 cm |
| L | 59–63 cm |
Fit Tip: Snow Helmet
Snow helmets need room for warmth and goggle compatibility. Make sure the fit is not too tight when worn with a balaclava or beanie. The helmet should sit comfortably above the eyebrows and align with goggle straps.
Asian Fit Note
Dotphy helmets are developed with head shape diversity in mind. Asian users typically have a rounder head shape and shorter front-to-back ratio compared to European users. Each helmet product page includes internal fit dimensions to help ensure the best match for your head shape. If you fall between sizes, prioritize internal width and frontal coverage for comfort.
How to Measure Your Head
- Use a soft measuring tape or string.
- Wrap it around your head about 2 cm above the eyebrows and ears, keeping it level.
- Check your measurement in centimeters and compare it to the chart above.
Tip: Try on the helmet with the fit system loosened first. The shell should rest evenly around your head, with adjustability to tighten securely without discomfort.
Snow Goggle Size Chart
Choose the right goggle frame for your face size and helmet fit. Goggles should create a full seal around your eyes without pressure points or gaps.
Small Frame
Best for youth and adults with narrow or smaller faces.
Medium Frame
The most common size for adults. Unisex fit with balanced field of view and comfort.
Large / Oversized Frame
Offers maximum peripheral vision, ideal for broader faces. Ensure helmet compatibility before purchase.
OTG (Over-the-Glasses) Goggles
Designed for use over prescription eyewear. These frames offer extra internal space for both glasses and airflow.
Note: Size and fit recommendations are provided for guidance only. Actual fit may vary by model. Please refer to the individual product pages for specific internal sizing details.
Size Guide
To ensure optimal comfort and protection, please refer to the Dotphy size guide. We recommend trying on the product whenever possible. Each helmet product page includes internal dimension ratios to help you better match your head shape.
MTB Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–58 cm |
| L | 59–62 cm |
Fit Tip: MTB Helmet
MTB helmets should fit snugly for technical trails and bumpy terrain. Make sure the helmet sits low and level, with minimal movement when shaken. Choose a size that provides firm coverage without pressure.
Road Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–58 cm |
| L | 59–61 cm |
Fit Tip: Road Helmet
Road cycling helmets prioritize aerodynamics and lightweight feel. The helmet should sit close to the head without gaps, secure during head movement, and allow airflow for long-distance comfort.
Full-Face MTB Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–58 cm |
| L | 59–61 cm |
Fit Tip: Full-Face Helmet
Full-face helmets should fit snugly around the cheeks and crown without gaps. Ensure the chin bar feels secure but not tight, and there’s no excessive movement during head turns or jumps.
Snow Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–59 cm |
| L | 59–63 cm |
Fit Tip: Snow Helmet
Snow helmets need room for warmth and goggle compatibility. Make sure the fit is not too tight when worn with a balaclava or beanie. The helmet should sit comfortably above the eyebrows and align with goggle straps.
Asian Fit Note
Dotphy helmets are developed with head shape diversity in mind. Asian users typically have a rounder head shape and shorter front-to-back ratio compared to European users. Each helmet product page includes internal fit dimensions to help ensure the best match for your head shape. If you fall between sizes, prioritize internal width and frontal coverage for comfort.
How to Measure Your Head
- Use a soft measuring tape or string.
- Wrap it around your head about 2 cm above the eyebrows and ears, keeping it level.
- Check your measurement in centimeters and compare it to the chart above.
Tip: Try on the helmet with the fit system loosened first. The shell should rest evenly around your head, with adjustability to tighten securely without discomfort.
Snow Goggle Size Chart
Choose the right goggle frame for your face size and helmet fit. Goggles should create a full seal around your eyes without pressure points or gaps.
Small Frame
Best for youth and adults with narrow or smaller faces.
Medium Frame
The most common size for adults. Unisex fit with balanced field of view and comfort.
Large / Oversized Frame
Offers maximum peripheral vision, ideal for broader faces. Ensure helmet compatibility before purchase.
OTG (Over-the-Glasses) Goggles
Designed for use over prescription eyewear. These frames offer extra internal space for both glasses and airflow.
Note: Size and fit recommendations are provided for guidance only. Actual fit may vary by model. Please refer to the individual product pages for specific internal sizing details.
Shipping calculated at checkout
Buy with Confidence
Our 60-day fit guarantee, free exchange & no-hassle returns
Size Guide
To ensure optimal comfort and protection, please refer to the Dotphy size guide. We recommend trying on the product whenever possible. Each helmet product page includes internal dimension ratios to help you better match your head shape.
MTB Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–58 cm |
| L | 59–62 cm |
Fit Tip: MTB Helmet
MTB helmets should fit snugly for technical trails and bumpy terrain. Make sure the helmet sits low and level, with minimal movement when shaken. Choose a size that provides firm coverage without pressure.
Road Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–58 cm |
| L | 59–61 cm |
Fit Tip: Road Helmet
Road cycling helmets prioritize aerodynamics and lightweight feel. The helmet should sit close to the head without gaps, secure during head movement, and allow airflow for long-distance comfort.
Full-Face MTB Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–58 cm |
| L | 59–61 cm |
Fit Tip: Full-Face Helmet
Full-face helmets should fit snugly around the cheeks and crown without gaps. Ensure the chin bar feels secure but not tight, and there’s no excessive movement during head turns or jumps.
Snow Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–59 cm |
| L | 59–63 cm |
Fit Tip: Snow Helmet
Snow helmets need room for warmth and goggle compatibility. Make sure the fit is not too tight when worn with a balaclava or beanie. The helmet should sit comfortably above the eyebrows and align with goggle straps.
Asian Fit Note
Dotphy helmets are developed with head shape diversity in mind. Asian users typically have a rounder head shape and shorter front-to-back ratio compared to European users. Each helmet product page includes internal fit dimensions to help ensure the best match for your head shape. If you fall between sizes, prioritize internal width and frontal coverage for comfort.
How to Measure Your Head
- Use a soft measuring tape or string.
- Wrap it around your head about 2 cm above the eyebrows and ears, keeping it level.
- Check your measurement in centimeters and compare it to the chart above.
Tip: Try on the helmet with the fit system loosened first. The shell should rest evenly around your head, with adjustability to tighten securely without discomfort.
Snow Goggle Size Chart
Choose the right goggle frame for your face size and helmet fit. Goggles should create a full seal around your eyes without pressure points or gaps.
Small Frame
Best for youth and adults with narrow or smaller faces.
Medium Frame
The most common size for adults. Unisex fit with balanced field of view and comfort.
Large / Oversized Frame
Offers maximum peripheral vision, ideal for broader faces. Ensure helmet compatibility before purchase.
OTG (Over-the-Glasses) Goggles
Designed for use over prescription eyewear. These frames offer extra internal space for both glasses and airflow.
Note: Size and fit recommendations are provided for guidance only. Actual fit may vary by model. Please refer to the individual product pages for specific internal sizing details.
Size Guide
To ensure optimal comfort and protection, please refer to the Dotphy size guide. We recommend trying on the product whenever possible. Each helmet product page includes internal dimension ratios to help you better match your head shape.
MTB Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–58 cm |
| L | 59–62 cm |
Fit Tip: MTB Helmet
MTB helmets should fit snugly for technical trails and bumpy terrain. Make sure the helmet sits low and level, with minimal movement when shaken. Choose a size that provides firm coverage without pressure.
Road Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–58 cm |
| L | 59–61 cm |
Fit Tip: Road Helmet
Road cycling helmets prioritize aerodynamics and lightweight feel. The helmet should sit close to the head without gaps, secure during head movement, and allow airflow for long-distance comfort.
Full-Face MTB Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–58 cm |
| L | 59–61 cm |
Fit Tip: Full-Face Helmet
Full-face helmets should fit snugly around the cheeks and crown without gaps. Ensure the chin bar feels secure but not tight, and there’s no excessive movement during head turns or jumps.
Snow Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–59 cm |
| L | 59–63 cm |
Fit Tip: Snow Helmet
Snow helmets need room for warmth and goggle compatibility. Make sure the fit is not too tight when worn with a balaclava or beanie. The helmet should sit comfortably above the eyebrows and align with goggle straps.
Asian Fit Note
Dotphy helmets are developed with head shape diversity in mind. Asian users typically have a rounder head shape and shorter front-to-back ratio compared to European users. Each helmet product page includes internal fit dimensions to help ensure the best match for your head shape. If you fall between sizes, prioritize internal width and frontal coverage for comfort.
How to Measure Your Head
- Use a soft measuring tape or string.
- Wrap it around your head about 2 cm above the eyebrows and ears, keeping it level.
- Check your measurement in centimeters and compare it to the chart above.
Tip: Try on the helmet with the fit system loosened first. The shell should rest evenly around your head, with adjustability to tighten securely without discomfort.
Snow Goggle Size Chart
Choose the right goggle frame for your face size and helmet fit. Goggles should create a full seal around your eyes without pressure points or gaps.
Small Frame
Best for youth and adults with narrow or smaller faces.
Medium Frame
The most common size for adults. Unisex fit with balanced field of view and comfort.
Large / Oversized Frame
Offers maximum peripheral vision, ideal for broader faces. Ensure helmet compatibility before purchase.
OTG (Over-the-Glasses) Goggles
Designed for use over prescription eyewear. These frames offer extra internal space for both glasses and airflow.
Note: Size and fit recommendations are provided for guidance only. Actual fit may vary by model. Please refer to the individual product pages for specific internal sizing details.
Size Guide
To ensure optimal comfort and protection, please refer to the Dotphy size guide. We recommend trying on the product whenever possible. Each helmet product page includes internal dimension ratios to help you better match your head shape.
MTB Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–58 cm |
| L | 59–62 cm |
Fit Tip: MTB Helmet
MTB helmets should fit snugly for technical trails and bumpy terrain. Make sure the helmet sits low and level, with minimal movement when shaken. Choose a size that provides firm coverage without pressure.
Road Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–58 cm |
| L | 59–61 cm |
Fit Tip: Road Helmet
Road cycling helmets prioritize aerodynamics and lightweight feel. The helmet should sit close to the head without gaps, secure during head movement, and allow airflow for long-distance comfort.
Full-Face MTB Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–58 cm |
| L | 59–61 cm |
Fit Tip: Full-Face Helmet
Full-face helmets should fit snugly around the cheeks and crown without gaps. Ensure the chin bar feels secure but not tight, and there’s no excessive movement during head turns or jumps.
Snow Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–59 cm |
| L | 59–63 cm |
Fit Tip: Snow Helmet
Snow helmets need room for warmth and goggle compatibility. Make sure the fit is not too tight when worn with a balaclava or beanie. The helmet should sit comfortably above the eyebrows and align with goggle straps.
Asian Fit Note
Dotphy helmets are developed with head shape diversity in mind. Asian users typically have a rounder head shape and shorter front-to-back ratio compared to European users. Each helmet product page includes internal fit dimensions to help ensure the best match for your head shape. If you fall between sizes, prioritize internal width and frontal coverage for comfort.
How to Measure Your Head
- Use a soft measuring tape or string.
- Wrap it around your head about 2 cm above the eyebrows and ears, keeping it level.
- Check your measurement in centimeters and compare it to the chart above.
Tip: Try on the helmet with the fit system loosened first. The shell should rest evenly around your head, with adjustability to tighten securely without discomfort.
Snow Goggle Size Chart
Choose the right goggle frame for your face size and helmet fit. Goggles should create a full seal around your eyes without pressure points or gaps.
Small Frame
Best for youth and adults with narrow or smaller faces.
Medium Frame
The most common size for adults. Unisex fit with balanced field of view and comfort.
Large / Oversized Frame
Offers maximum peripheral vision, ideal for broader faces. Ensure helmet compatibility before purchase.
OTG (Over-the-Glasses) Goggles
Designed for use over prescription eyewear. These frames offer extra internal space for both glasses and airflow.
Note: Size and fit recommendations are provided for guidance only. Actual fit may vary by model. Please refer to the individual product pages for specific internal sizing details.
Size Guide
To ensure optimal comfort and protection, please refer to the Dotphy size guide. We recommend trying on the product whenever possible. Each helmet product page includes internal dimension ratios to help you better match your head shape.
MTB Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–58 cm |
| L | 59–62 cm |
Fit Tip: MTB Helmet
MTB helmets should fit snugly for technical trails and bumpy terrain. Make sure the helmet sits low and level, with minimal movement when shaken. Choose a size that provides firm coverage without pressure.
Road Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–58 cm |
| L | 59–61 cm |
Fit Tip: Road Helmet
Road cycling helmets prioritize aerodynamics and lightweight feel. The helmet should sit close to the head without gaps, secure during head movement, and allow airflow for long-distance comfort.
Full-Face MTB Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–58 cm |
| L | 59–61 cm |
Fit Tip: Full-Face Helmet
Full-face helmets should fit snugly around the cheeks and crown without gaps. Ensure the chin bar feels secure but not tight, and there’s no excessive movement during head turns or jumps.
Snow Helmet Size Chart
| Size | Head Circumference |
|---|---|
| M | 55–59 cm |
| L | 59–63 cm |
Fit Tip: Snow Helmet
Snow helmets need room for warmth and goggle compatibility. Make sure the fit is not too tight when worn with a balaclava or beanie. The helmet should sit comfortably above the eyebrows and align with goggle straps.
Asian Fit Note
Dotphy helmets are developed with head shape diversity in mind. Asian users typically have a rounder head shape and shorter front-to-back ratio compared to European users. Each helmet product page includes internal fit dimensions to help ensure the best match for your head shape. If you fall between sizes, prioritize internal width and frontal coverage for comfort.
How to Measure Your Head
- Use a soft measuring tape or string.
- Wrap it around your head about 2 cm above the eyebrows and ears, keeping it level.
- Check your measurement in centimeters and compare it to the chart above.
Tip: Try on the helmet with the fit system loosened first. The shell should rest evenly around your head, with adjustability to tighten securely without discomfort.
Snow Goggle Size Chart
Choose the right goggle frame for your face size and helmet fit. Goggles should create a full seal around your eyes without pressure points or gaps.
Small Frame
Best for youth and adults with narrow or smaller faces.
Medium Frame
The most common size for adults. Unisex fit with balanced field of view and comfort.
Large / Oversized Frame
Offers maximum peripheral vision, ideal for broader faces. Ensure helmet compatibility before purchase.
OTG (Over-the-Glasses) Goggles
Designed for use over prescription eyewear. These frames offer extra internal space for both glasses and airflow.
Note: Size and fit recommendations are provided for guidance only. Actual fit may vary by model. Please refer to the individual product pages for specific internal sizing details.
The Defender bundle helps you gear up your sports with more protection and less budget. It comes with a Defender 1000 Pro ski goggle and a Defender One helmet that doubles the safety to make your day comfortable on the mountain. They also work perfectly in compatibility to enhance fit and bring less fogging.
Defender One:
- ABS outer shell with anti-impact protection
- EPS interior absorbs shock and insulates coldness
- Thick earmuffs and detachable chin pad ensure warmth
- Flexible vents release moisture to keep your head from clammy
- Size adjustment dial friendly for everyone to find their best fit
Defender 1000 Pro:
- Two-lens system enables you to ride in variable light conditions
- Magnetic fastening allows you to easily swap the lens from one to another
- Excellent anti-fog capability ensures good visibility
- UV-proof mirrored coating protects your eyes all day long
- Rimless design offers a wide vision to let you cruise freely
- Multi-layered face foam brings optimal comfort and fit
- Adjustable strap with unique pattern and dotphy logo creates a chic look
- OTG friendly
When you receive the bundle, you will get...
- Defender One ski helmet
- Defender 1000 Pro ski goggle
- Extra replacement lens
- Double layer microfiber bag
- EVA storage case
- Bonus: stickers and cup coaster
SKU:
Please confirm the above SKU number with us before you make a return/replace order.
Helmet Specification
- ABS plastic outer shell with injection-molded technique, designed with vents on the surface.
- EPS liner glued to the inner side of the shell and covered with the mesh lining.
- Snap buckle on the chin strap makes easy putting on/off.
- Ear pads with polyester stuffing.
- Elastic nylon strap on the back of the shell to fasten the goggles.
Goggle Specification
- Cylindrical lens design; dual-layer lens technology with anti-fog coating and anti-scratch capability.
- 100% UV protection shields your eyes against the harmful strong sunlight.
- Triple-layer face foam, with an internal self-condensing ventilation system, keep smooth air flow and ensure clear visibility in snow.
- Unisex frame design and jacquard strap with easy adjustment, suitable for a wide range of people.
- Dotphy helmets compatible. The combined use maximizes comfort, ventilation, and fog-free performance.
- Silicone-lined (45mm) strap prevents the goggle from slipping on your helmet.
Head Circumference
- M-L (55-59cm), XL-XXL (59-63cm)
Goggle Dimension
- Height:101 mm x Width:176 mm x Depth:27.8 mm
