OUR LIGHTEST AND MOST BREATHABLE FULL-FACE HELMET Conquer the mountain with this full-face protection specialist. The Proframe Vow 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 and a dual-density EPS liner into a superlight shell along with our patented, fully integrated chin bar. The Proframe Helmet has 15 intake and 9 exhaust vents which provide exceptional airflow and breathability on both climbs and descents. Thanks to its fixed design, there's no need to stop, remove, and store the chin bar. Ride wide open with the Proframe. MIPS™ added protection system has been proven to reduce the rotational motion when implemented in a helmet by absorbing and redirecting energies and forces otherwise transmitted to the brain Fox integrated chin bar is secured to the helmet with our patent-pending system and meets ASTM downhill standards Highly breathable liner system