The Sperian M86CLU Protecto-Shield visor is made of distortion-free .06-thick molded propionate. Injection molded visors have the added benefits of Prism Perfect optical properties, a built in reinforced edge, and thicker impact protection than acetate. Visors have a universal hole pattern for use with other manufacturers as well as Protecto-Shield headgear, and all Sperian brackets. Impact resistant and clear view. Measures 8 1/2 x 15. Headgear sold separately.