Fox Flux Helmet Product Description: A deeper rear profile EPS shell offers more comprehensive coverage than a traditional XC helmet. In-molding technology molds the outer shell onto the EPS foam. The outer shell covers and protects the EPS from dings and dents, and adds structural integrity with a molded wrap fit. Detox retention system. Visor and Spoiler. 20 strategically placed vents. Inset Chin Straps. Testing Standards: CPSC, CE: EN 1078, AS/NZS 2063 SIZES Small/Medium 55-58cm Large/ExtraLarge 59-62cm