Multi-Directional Impact Protection System - Reduces and dissipates rotational forces placed on the head by an impact, for added safety. Fixed Goggle Clip - Secures your goggles, even when propped on your helmet, from becoming lost under the lifts. Fixed Goggle Chimney - Matches with goggle vents to allow steam to evacuate through the helmet. PC and ABS Shell - Polycarbonate and Acrylonitrile Butadiene Styrene blend delivers a lightweight wear, feel and protection. In-Mold Construction - EPS Liner, or Expanded polystyrene foam, is included for shock absorption and bonded to the outer shell. Detachable Ear Padding - Detachable ear padding offers totally flexible ventilation control. RECCO Reflector - Small transponder put in place as an added safety measure by aiding in any search and rescue. NFC Medical ID - Small chip that medical responders can access vital medical information should an accident occur. Obex Communication Headset Compatible - SOLD SEPARATELY Medium /Large - 54-59 cm Extra-Large/ XX-Large - 56-61 cm POC Obex BC MIPS Helmet