Product details:

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 molds to any shape head. SHELL - High-Impact ABS LINER - EPS VENTS - 11 Open Vents INTERIOR - Heat-Sealed Premium Pads FIT - 5 sizes - XS, S, M, L, XL CERTIFICATIONS - ASTM 1492/1447, CPSC 1203, AS/NZS 2063 2008, CE 107