Details The Fox Racing Proframe RS Full Face Helmet takes the lightweight breathability of the Proframe to the next level of safety and performance. Featuring the all-new Mips® Integra Split protection system, which combines a dual density foam - for high and low speed impacts - and a low friction layer between the two layers designed to reduce rotational forces in a crash that would otherwise be transmitted to the brain. Designed to meet the needs of all-mountain riders and enduro racers, the increased ventilation and decreased surface contact of the helmet keep you cool on long rides, while the Ionic+ and anti-microbial liner and multi-sized cheek pads provide optimized comfort and fit. The updated BOA® fit system offers micro-adjustability providing class-leading fit and security. The chinstrap utilizes a Fidlock® magnetic closure system for easy-open and close, even with gloves. The 3-position adjustable visor with lock down screw is compatible with goggles. Those looking to capture every sweet run will appreciate the removable, under-visor GoPro mount on the Fox Proframe RS mountain bike helmet. Construction Equipped with Mips® Integra Split low friction layer Dual density foam for high and low speed impacts Fidlock® magnetic closure system on chin strap EPS, PC, PA, EPP, polyester Fit BOA® fit system for class-leading fit and security 3-position adjustable visor compatible with goggles Multi-sized cheek pads to optimize fit Ventilation Increased ventilation and decreased surface contact area for improve cooling Ionic+ anti-microbial liner to reduce odor Details Removable under-visor GoPro mount included Lightweight, next-level full face helmet for enduro, trail, and downhill riding Certifications ASTM F1952 - DH Certified ASTM F2032 EN 1078:2012 + A1:2012 AS/NZ 2063-2020 CPSC 1203 Helmet Size S= 51-55 cm / 20.1-21.7" M = 55-59 cm / 21.7-23.2" L = 59-63 cm / 23.2-24.8" Weight 820 g (size medium) Fox Racing Proframe RS Full Face Helmet