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M1 Size Chart
| Youth Medium | Youth Large | X-Small | Small | Medium | Large | X-Large | |
|---|---|---|---|---|---|---|---|
| inch | 18.8-19.6 | 19.6-20.5 | 20.75-21.25 | 21.5-22 | 22.5-22.75 | 23.5-23.75 | 24-24.25 |
| cm | 48-50 | 50-52 | 53-54 | 55-56 | 57-58 | 59-60 | 61-62 |
Youth Transition Knee
Youth Medium / Black - $99.99
- Youth Medium / Black - $99.99
- Youth Large / Black
- Small / Black - $99.99
- Small / Burnt Orange
- Small / Blue - $99.99
- Medium / Black - $99.99
- Medium / Burnt Orange - $99.99
- Medium / Blue - $99.99
- Large / Black - $99.99
- Large / Burnt Orange - $99.99
- Large / Blue - $99.99
- X-Large / Black - $99.99
- X-Large / Burnt Orange - $99.99
- X-Large / Blue - $99.99
PRODUCT DETAILS
7iDP M1 Full Face Mountain Bike Helmet
LIGHTWEIGHT FULL FACE PROTECTION
The M1 Full Face Helmet is perfect for anything from racing to full days of uplifting or bike park laps. Our M1 Helmet is the ideal helmet to keep you protected and comfortable.
For 2023 the M1 Helmet has five color choices so there's something for everyone in sizes from Youth Medium through Adult XL. 
Features: 
- Lightweight ABS Shell
- 13 Vents provide cool air intake and heat exhaust
- Large eye port for greater field of vision and improved goggle fit
- 5 colors
- 7 sizes
- Complies to CPSC Standards
- Weight: 900g (size M)
 
Size & Fit
M1 Size Chart
| Youth Medium | Youth Large | X-Small | Small | Medium | Large | X-Large | |
|---|---|---|---|---|---|---|---|
| inch | 18.8-19.6 | 19.6-20.5 | 20.75-21.25 | 21.5-22 | 22.5-22.75 | 23.5-23.75 | 24-24.25 |
| cm | 48-50 | 50-52 | 53-54 | 55-56 | 57-58 | 59-60 | 61-62 |