The Troy Lee Designs GP Overload Helmet-Red/White is both lightweight and durable with a 1500-gram polyacrylite shell. It features 16 air vents to keep your noggin cool while pedaling hard. For added safety there is an emergency release system for first responders. Comes in three shell sizes to fit old heads, small heads, big heads, bald heads. A Troy Lee Designs helmet sock is included. FEATURES Technologically advanced polyacrylite shell construction EPP (Expanded PolyPropylene) chin bar for lightweight, durable protection Three shell sizes to more accurately fit a variety of head sizes and rider ages 3D contoured cheek pads with emergency release system for EMS responders Plastic visor screws and brass inserts for easy impact break-away Comes with TLD helmet drawstring sock.