Weighs in at less than 1/2 an ounce, and is easy to wear all day long. Designed as a shoot glass for sport and military, it is superior in construction and diverse in application. Vented rubber nosepiece for breathability. One-piece, frameless lens for greater coverage. Hard coat polycarbonate lens protects against scratches. Provides 99.9% UVA and UVB protection . Complies with ANSI Z87.1 standards.