Bell Fraction Adult Multi-Sport Helmet Dual certified, skate/BMX-inspired helmet; available in three sizes in multiple colors/graphics Constructed with an ABS hard-plastic shell and a dual-density EPS liner 12 vents allow cool air in and warm air out Best suited to BMX street/dirt riding, cruising, and skate boarding CPSC bicycle safety standard certified and ASTM 1492 skate certified; one year warranty