3M™ SecureFit™ Protective Eyewear, SF201AF offers a comfortable, personal fit to keep safety glasses securely in place through the rigours of daily work. Designed to diffuse pressure of the ears, these safety glasses use 3M Pressure Diffusion Temple Technology to easily conform to the wearer's head size for a unique, customized fit. These flexible safety glasses also feature an anti-fog coating on the lenses to help reduce the chances of fogging and maintain visibility even in hot and humid environments.