Wave Cel advanced technology, Boa fit sysem lets you easily secure and adjust helmet fit with just one hand. Fidlock magnetic buckle fastens effortlessly for a quick, secure fit. Front Blendr mount system easily integrates GoPro camera and Bontrager light accessories.Additional NoSweat pad with silicone channel keeps sweat out of eyes for constant clarity. Drop-in coverage on back of helmet offers extended protectionCrash Replacement Guarantee provides a free helmet replacement if involved in a crash within the first year of ownershipComplies with U.S. CPSC safety standards for bicycle helmets for persons age 1 and over.