Proprietary Midstroke Support Valve improves predictability and support beyond the sag point

Ventilation: There are 11 vents and channels to keep your head as cool as possible

5" x 7"/11" Expanded

Volume = 11

The extended leg sock offers great support high on the thigh

Fox Proframe Helmet - S - Clyzo Atomic Orange PLP|Riding Style Proprietary Midstroke Support Valve improvesBreathable full face mountain bike helmet. Conquer the mountain with this full face protection specialist. The Proframe Clyzo Helmet is the original full face trail helmet and is still the market leader. Designed to meet the needs of all mountain riders and enduro racers, it packs Mips technology into a superlight shell. Mips added protection system has been proven to reduce the rotational motion when implemented in a helmet by absorbing and