6 point ratchet suspension hard hats. Made from ABS material, this thermoplastic resin is a lightweight material that combines strength and rigidity. Low profile design offers a low center of gravity for better balance Rear padded suspension provides additional level of comfort on the wearers' neck. Vented pressure pad keeps the straps in place providing an additional level of comfort. Easy to grasp triangle knob adjusts the suspension from 6.5 to 8-inch hat sizes. Replaceable sweat band padded fabric and polyurethane foam for all day wear. 4-position harness points allows you to move the harness forward, backward, up or down-allowing for the most optimal position for ultimate comfort.