3M™ SecureFit™ Protective Eyewear 600 Series features proprietary 3M™ Pressure Diffusion Temple Technology that helps diffuse pressure over the ear to enhance frame comfort while not compromising the security of fit across a diverse workforce. Lightweight, cool safety glasses. Our stylish design features the proprietary 3M™ Pressure Diffusion Temple Technology – a scientific advancement that helps diffuse pressure over the ear and enhances temple comfort while not compromising the security of fit across diverse workforces, and has a soft nosepiece to help reduce slippage. Grey rugged anti-scratch coated polycarbonate lens absorbs 99.9% UVA & UVB. Effective in both hot and cold weather. Weighing less than 1 oz (28 g), the durable, snug-fitting, flexible nature of the 3M™ SecureFit™ Protective Eyewear 600 Series offers a more comfortable and personal fit than the old-fashioned "one-size-fits-all" glasses that are rigid and unyielding in design. These glasses adapt to the wearer, rather than the other way around. The snug fit also helps keep the glasses securely in place as the wearer looks up and down or side to side, reducing the need for frequent repositioning of the glasses due to head movement.