The Proframe is Fox's lightest and most breathable full-face mountain bike helmet. Designed to meet the needs of all-mountain riders and enduro racers, the Proframe Helmet Blocked features MIPS technology and a dual-density EPS liner in a super lightweight shell, and it's finished with Fox's patented, fully integrated chin bar. Thanks to its fixed design, there's no need to stop, remove, and store the chin bar. The Proframe has 15 intake and nine exhaust vents, which provide exceptional airflow and breathability on both climbs and descents. Conquer the mountain with the full-face protection of the Fox Proframe Blocked Helmet. MIPS added protection system for proven reduction in rotational motion that's transmitted to the brain during a crash Dual-density Varizorb EPS liner for improved protection Integrated chin bar is secured to the helmet with patent-pending system and meets ASTM downhill standards Highly breathable liner provides sweat-wicking and anti-microbial performance 15 Big Bore vents and nine exhaust vents keep you cool and aid in moisture-management Summer 2023 product Equipped With Multi-directional Impact Protection System (MIPS) MIPS Brain Protection System is a helmet-integrated, low-friction layer designed to reduce rotational motion transferred to the brain from angled impacts to the head. Varizorb EPS Varizorb dual-density EPS liners are meant to provide improved impact protection by spreading the forces of impact across a wider surface area. Fidlock Fidlock patented technology allows fasteners to be opened and closed with just one hand—even when wearing gloves.