3M Pressure Diffusion Technology allows temples to naturally adjust to individual head sizes, eliminating the need to stock multiple frame sizes at worksites. Secure, snug fit keeps eyewear in place without slippage even when the wearer is in motion. Anti-fog coating helps keep lenses free of moisture in hot & humid conditions. Polycarbonate lenses absorb 99.9% UVA & UVB up to 380 nm. SecureFit 3700 OTG SeriesDesigned to offer eye protection with all-day wearability for workers with prescription eyeglasses. Safety Glasses Style: Over-the-Glasses; Frame Color: Blue; Frame Material: Plastic; Lens Material: Polycarbonate.