3M SecureFit SG201AF safety glasses have a stylish, lightweight design that weighs less than 1oz. 3M Pressure Diffusion Technology allows temples to naturally adjust to individual head sizes. Secure, snug fit keeps eyewear in place without slippage even when the person is in motion. Anti-fog coating helps keep lenses free of moisture in hot and humid conditions. Absorbs 99.9% UV radiation.