3M SecureFit Protective Eyewear is designed to diffuse pressure over the ears through 3M's proprietary Pressure Diffusion Temple Technology. The glasses automatically adjust to the head and facial features of the wearer. Weighing less than 1 ounce, the durable, snug fitting, flexible nature of SecureFit offers a more comfortable and personal fit than old fashion "one size fits all" glasses. The snug fit also keeps the glasses securely in place as the wearer looks up and down or side to side, eliminating the need for frequent repositioning. Scotchgard Anti-Fog Lens Coating helps workers see clearly, longer. Meets the High Impact Requirements of CSA Z94.3-2007 and the High Impact Requirements of ANSI Z87.1-2020.