LIGHTWEIGHT, NEXT-LEVEL FULL-FACE HELMET The Proframe RS Helmet takes the lightweight breathability of the Proframe and takes it 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. BOA® fit system for class-leading fit and security Equipped with Mips® Integra Split low friction layer Dual density foam for high and low speed impacts 3-position adjustable visor compatible with goggles Removable under-visor GoPro mount included Increased ventilation and decreased surface contact area for improve cooling Ionic+ anti-microbial liner to reduce odor Multi-sized cheek pads to optimize fit Fidlock® magnetic closure system on chin strap DH Certified Weight: 820 g (size medium) Materials: EPS, PC, PA, Epp, polyester Note: Avoid exposure to aerosol sprays like bug repellent and sunscreens as they can cause your helmet's finish to peel. Size Sizes: small, medium, and large (see size guide for measurements) How to Dial Your Fit BOA® dial: 52 micro adjustments - counterclockwise to loosen, clockwise to tighten - allows for a precisely dialed fit. Adjust while wearing the helmet. Back cradle: four points of adjustment move the cradle up or down your head to ensure the best fit possible. Cheek pads: two set of cheek pads are included with the helmet - a preinstalled thin pad set and an optional thick pad set for a more snug fit. ASTM F1952 - DH Certified ASTM F2032 EN 1078:2012 + A1:2012 AS/NZ 2063-2020 CPSC 1203 Size S M L XL Head Size 20.5-22.0" 22.0-22.8" 22.8-24.0" 24.0-25.2" Cheek Pad Size 17.7" 11.8" 17.7" 7.9" Hat Size 6 1/2-7" 7-7 1/4" 7 1/4-7 5/8" 7 5/8-8" Head Size 52-56 cm 56-58 cm 58-61 cm 61-64 cm Cheek Pad Size 45 mm 30 mm 45 mm 20 mm Hat Size 16.6-17.8 cm 17.8-18.5 cm 18.5-19.4 cm 19.4-20.4 cm