Stealth Carbon Fiber F117 Helmet (Black, Large) Aerodynamically designed with a tighter opening that sits closer to your body to minimize wind buffeting Lightweight ABS thermoplastic alloy shell that is DOT FMVSS 218 and ECE 22.05 certified 3-Stage top vents, an adjustable mouth vent and rear exhaust port vents combined with a channeled interior maximize air flow A simply operated, uniquely designed positive drop down shield mechanism ensures there will never be any unintentional deployment of the DDS All Stealth products are backed by 1 year manufacturer defect warranty, the warranty excludes wear and tear, any end-user modification, improper use or abuse, and/or crash damage