PROTEC Original Pro-tec Ace Skate Matte Skateboard Helmet CPSC and ASTM Certified helmet for skateboarding, bicycling, and a broad range of action sports with modern skate style Stiff EPS foam liner; tough ABS shell 16 large vent openings to help keep your head cool during intense use; comfortable interior padding Shell: High-Impact ABS Liner: 2-Stage soft foam liner Interior: Dri-Lex lamination on the 2-stage foam liner