The Old School Cert was modified from the original 1973 Full-Tec and features a retro shape that sits low on your head, offering great impact protection. The premium heat-sealed liner keeps you comfortable and the 11 open vents keep you cool. The more round shape practically moulds to any shape head. • SHELL • High-Impact ABS offers durable, lightweight protection • LINER • 2-stage foam offers perfect mix of protection and comfort • VENTS • 11 open vents allow airflow to keep your head cool • INTERIOR • Dri-Lex® wrapped 2-stage liners wick away moisture • FIT • 5 sizes: XS, S, M, L and XL