The Titmus SW10 are prescription safety glasses made of high-quality plastic, with no metal content. These safety glasses feature high-performance protection and sporty styling. Made specifically for safety lenses that meet ANSI standards, they feature a removable foam insert as well as integral side shields. Plus, they are available in two sizes, with lens width of 53mm or 56mm, and three color variations: brown, camo, and clear. In addition, they meet ANSI Z87.1 safety standards.