The Fox Proframe MIPS MTB Helmet is the lightest and most breathable full face mountain bike helmet that Fox have ever created. Designed to perform at the highest levels for aggressive all mountain riders and enduro racers, it packs DH certified protection into a superlight shell via Fox's patent pending, fully integrated chinbar. With 15 Big Bore intake and 9 exhaust vents, the Fox Proframe Helmet offers open face level airflow and breathability to keep you cool on even the longest and most challenging climbs; and once you reach the top, it gives you the confidence to ride to your limits on even the toughest of descents. This helmet is equipped with the MIPS low friction layer. MIPS is a patented brain protection system developed to reduce rotational violence causing strain in the brain at angled impacts. MIPS mimics the brain’s own protection system by adding a low-friction layer between the head and the helmet. A helmet with MIPS can absorb more energy from an angled impact. Conventional helmets are tested by dropping them vertically onto a flat surface. MIPS is designed and tested for reality, reflecting how most accidents occur, with angled impacts to the head. MIPS raises the bar for helmet safety. Fox Proframe MIPS MTB Helmet Features 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 their patent pending system and meets ASTM downhill standards Highly breathable liner system is moisture wicking and has anti-microbial properties ? 15 Big Bore vents and 9 exhaust vents keep you cool and aid in moisture management The securely fixed visor is positioned to channel airflow into the Big Bore vents Fidlock® SNAP helmet buckle provides quick and secure entry and exit while wearing gloves Dual-density Varizorb EPS liner provides improved protection by spreading forces of impact across a wider area