ABS Outer Shell paired with patented Conehead EPS liner technology results in a lighter helmet with greater energy displacement on impact Dual Certified: Complies with U.S. CPSC Bike and ASTM skate safety standardsComplete with the renowned Sweatsaver⢠Fit Pads for added comfort Adjustable Fit Dial System with reflective dial ensures a custom fitGrooved EPS for excellent air flowBMX/SkateABS Hard ShellXS/SM 18.9 to 21.3` (48 to 54 cm)BlackDial AdjustUPC/EAN/GTIN: 604352033015