Maximum coverage open face mountain bike helmet The Dropframe Pro Flow Helmet is a game-changing open-face 3/4 enduro helmet. It features Mips® the BOA® Fit System for class-leading fit and security increased ventilation plus an Ionic+® 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. Key Features Mips® equipped Dual-density Varizorb™ EPS provides improved protection 8 intake vents and 7 exhaust vents keep you cool In the Box One thin cheekpad set and one thick cheekpad set One thin headliner and one thick headliner Removable under-visor GoPro® mount included Size and Fit Size Sizes: small medium and large see size guide for measurements 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 and Care Care For care instructions see our Helmet Care Guide Note: Avoid exposure to aerosol sprays like bug repellent and sunscreens as they can cause your helmet's finish to peel Materials: 22% ABS 21% EPS 15% polycarbonate 13% polyurethane 9% pa 14% nylon 6% polyester