Rocky Rescue Climbing Hard Hat W/ Ratchet Suspension - CSA TYPE 1 - HP141R - 1/CSROCKY HARD HAT CSA TYPE 1, 4 POINT NYLON SUSPENSION, SURE LOCK II`` RATCHET & PERM ATTACH 4 POINTS CHIN STRAP ADJUSTMENT Made of Polycarbonate mix with ABS making the hat ultra light while offering an exceptional protection against shocks, radiation and impacts. Non vented Hat offering maximum protection against electrical shocks. The absence of the front peak offer a total non obstructed vision up stream. The universal slot on each side of the helmet