The CSS 1200 safety glasses from Uvex have a single-piece, scratch-resistant polycarbonate lens. The frame adjusts to three positions for optimal fit and comfort. The 135mm lens features molded-in side shields and brow guard for extra protection. The lenses block over 99% UVB and 99% UVA radiation up to 385nm. The 4C+ coating minimizes fogging, scratching, static and provides additional UV protection.