Centurion Concept Safety Helmet S08 ABS Hard Hat Reduced Peak Vented Ratchet Headband Reduced Peak 20mm front lip, allows for further upward visibility Vented design keeps head cool Ratchet headband, twist to fit design keeps hat on secure Lightweight ABS (Acrylonitrile Butadiene Styrene) Shell. 20% lighter than the competition ANSI/ISEA Z89.1-2009 Type 1 Class C