Shoei Solid X-14 Sports Bike Racing Motorcycle Helmet - White/Medium Upper air intake vent is positioned to maximize air volume into the helmet interior DOT approved. Meets the FMVSS 218 Standard. Comfortable, 3D Max-Dry helmet liner material absorbs and dissipates sweat and moisture twice as fast as traditional nylon interiors, keeping aggressive riders cool and dry Removable Lower Air Spoiler can be affixed to the chin bar to improve aerodynamic stablization