Composite shell in three sizes. Pro-Fit elastic comfort liner that shapes to your head. Large ventilation channels to keep your head cool even at lower speeds. X-Static Inner liner is washable, breathable and has moisture wicking anti-odor fabric. The helmet meets the DOT standard (FMVSS218) The best safety and Pro-Fit comfort. Leatt helmets feature category-defining 360 ̊ Turbine Technology, the helmet is lined with 360 ̊ turbines, which are discs constructed from an energy-absorbing material designed to allow the head to move slightly inside the helmet during a crash reducing rotational, direct, and deflective impact energy. Once on your head you will quickly forget you are wearing a helmet. The Pro-Fit modulating comfort liner stretches over your head to provide superior comfort and stability. The all new 8.5 helmet is a great choice for any Thrill-seeker and is both ECE and DOT certified! Includes visor extender, helmet bag and Free Leatt Velocity goggles!