All Ridgeline hard hats are made from ABS thermoplastic resin, which combines strength and rigidity.This material is ultra-lightweight, making Ridgeline hard hats some of the lightest on the market today-up to 10 percent lighter than hard hats using traditional materials.ABS material is considered superior for its hardness, gloss, toughness, and electrical insulation properties.This hard hat includes a 4 point ratchet suspension that is easy to adjust while wearing.The 4 point suspension can easily be converted to a 6 point suspension with the addition of part HP6PTSUS.The soft brow pad is replaceable