3M SecureFit, Protective Eyewear, SF201AS, CLEAR lens, Pack of 20 3M Pressure Diffusion Technology allows temples to naturally adjust to individual head sizes eliminating the need to stock multiple frame sizes at worksites At a weight of less than 1 oz., provides comfortable, durable, lightweight eye protection Secure, snug fit keeps eyewear in place without slippage even when the person is in motion Anti-scratch coating helps protect lenses from scratches, nicks and scrapes that can become distractions Polycarbonate lenses absorb 99.9% UVA and UVB up to 380 nm and meet the requirements of CSA Z94.3 and ANSI Z87.1-2013