Jackson Safety SC-6 Hard Hat (14837), 4-Point Ratchet Suspension, Smooth Dome, Meets ANSI, Green, 12 / Case 12 Green Jackson Safety SC-6 Hard Hats / Case; Fits head sizes 6  to 8 Meets ANSI Z89.1 - 2009, Class C, G & E Smooth dome leaves no crevices for buildup and is made of lightweight molded dielectric HDPE (high density polyethylene) 4-point ratchet suspension system helps with fit and comfort Features accessory slots for attaching additional personal protective equipment