This product ships straight from the factory... allow 3 days for order to ship from East Coast.
With just 215g of weight, Protone has the lowest drag and the fastest heat dissipation coefficients compared to any other ventilated helmet. Thanks to several ventilation holes and a thick padding material, heat and moisture are dissipated very quickly, improving comfort and performance without renouncing safety: the top area is reinforced with an internal plastic sub-structure that increases crash protection.
| Kask size |
cm |
inch |
| S |
50 - 56 |
19 11/16 - 22 3/64
|
| M |
52 - 58 |
20 15/32 - 22 53/64
|
| L |
59 - 62 |
23 15/64 - 24 13/32
|
