The Protone weighs just 215g and uses a 3D Dry padding with a multi-layer open cell construction process to give a more comfortable ride. It has removable and washable inner padding, made from CoolMax® fabrics. KASK has also continued to use its Multi In-Moulding Technology to create a polycarbonate cover for the top, base ring and the back of the helmet’s shell. This is joined to the inner polystyrene cap via KASK’s In-Moulding Technology to improve the shell’s shock absorption. Its strengthened frame further reduces the risk of a shock breaking the shell.
| 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 |
