Available in several styles to meet individual needs. Flat acetate is for chemical applications and light impact protection. Heat-formed polycarbonate is for high-heat applications with little or no exposure to chemicals. (Heat-formed visors are curved to the shape of the bracket to minimize stress cracking and improve ease of attachment.) Visors are also available in polyester and mesh screen. Standard package is 50/carton, sold individually. Acetate visors and polycarbonate visors (plus Tritan) meet ANSI/ISEA Z87.1-2015 High Impact.