GMAX OF-17 Adult Solid Open-Face Motorcycle Helmet - Black/Large: Automotive. Buy GMAX OF-17 Adult Solid Open-Face Motorcycle Helmet - Black/Large: Helmets - ✓ FREE DELIVERY possible on eligible purchases. DuPont Coolmax interior keeps you dry and comfortable. Coolmax wicks moisture away from your body and dries quickly . Removable, adjustable, washable Coolmax interior allows for easy cleaning and custom fitting . Industry leading six vents, including new GMAX top and rear vents with premium SPC vented EPS and interior engineered for maximum air flow control . DOT approved. Meets the FMVSS 218 Standard. . Speaker pockets for easy communication system installation . The new OF-17 offers many of the features of our premium open face helmets at a price to fit any budget. As with all GMAX helmets, a Coolmax interior is standard as well as a 100% UV400 protective face shield. You also have the option of running it with a sun visor for around town or for those days wind you just want to feel the wind on your face. DOT Approved and Meets the FMVSS 218 Standard . . .