The Jackson SC6 Ratchet Hard Hats offer a slotted design and are constructed of durable/lightweight dielectric plastic. Foam forehead cushion and deep nape strap included. These impact absorbing hats are excellent for general overhead protection. Consider for use with faceshields, welding helmets, and hearing protection. SC 6 hard hats meet ANSI Z89.1 Type 1, Class G,C & E safety standards