The Fox Proframe MIPS Full Face MTB Helmet is the lightest and most breathable full face mountain bike helmet Fox has ever created.?The Fox integrated chin bar is secured to the helmet with a patent-pending system and meets ASTM downhill standards.?The?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 Proframe MIPS Full Face MTB Helmet FeaturesMIPS added protection system.Fox integrated chin bar.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.