Shell constructed from high density polyethylene materials. Ratchet suspension is easy to adjust and allows the wearer to modify the fit while wearing hard hat. Soft brow pad is replaceable. Replaceable suspensions and headbands also available. Custom imprinting available on hard hats. 4-point suspensions can be converted to a 6-point suspension with the HP6PTSUS. Meets ANSI Z89.1-2009 Standards, Type 1, Class C, G, and E LIGHTEST FULLBRIM HARDHAT WE CARRY!! PERFECT FOR LINEMAN OR ANYONE WITH STRESS ON THE NECK.