Maximum coverage open face mountain bike helmet The Dropframe Pro Helmet is a game-changing open-faced 3/4 enduro helmet. It features Mips® the BOA® Fit System for class-leading fit and security increased ventilation plus an ionic+® anti-microbial liner and cheek pads to optimize fit. With its increased coverage for the ears jaw and back of the head this MTB helmet provides the most complete coverage we offer in an open-face helmet. Mips® equipped BOA® Fit System for class-leading fit and security Goggle and sunglasses compatible Removable under visor GoPro mount included FIDLOCK magnetic closure for easy operation Large vents keep you cool Meets the NTA-8776 E-bike helmet certification standard BOA® Fit System for class-leading fit and security 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 3-position adjustable visor compatible with goggles Removable under visor GoPro mount included Big Bore front vents include eyewear storage recess Increased ventilation and decreased surface contact area improve cooling Ionic+® anti-microbial liner and cheek pads to optimize fit FIDLOCK magnetic closure One thin cheekpad set and one thick cheekpad set included One thin headliner and one thick headliner included Removable under visor GoPro mount included Meets the NTA-8776 E-bike helmet certification standard How to Dial Your Fit BOA® dial: 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. Comes with additional cheek pads and liners for a personalized fit Select thinner or thicker pads to achieve a tighter or looser fit according to your preferences Materials: 30% EPS 11% EVA 10% polycarbonate 13% nylon 11% Pom 14% Tpee