Dual certification - complies with U.S. CPSC Bike and ASTM Skate safety standardsIncludes 2 sets of Sweatsaver liners to customize fitA portion of sales will be donated to the Tony Hawk Foundation to continue its mission of empowering youth through the creation of public skateparks in low-income communitiesBMX/SkateABS Hard ShellSM/MD 21 to 22-1/2` (53 to 57 cm)Pacific Beach Blue10UPC/EAN/GTIN: 604352036764