3M SecureFit Safety Glasses SF401SGAF-RED Red/Gray Clear Scotchgard Anti-fog Lens 20 EA/Case Innovative temple design features slotted ribs that provide comfortable pressure equalization, allowing the temples to flex and self-adjust to the size of the wearer's head. Curved temples apply pressure to the less sensitive back of the head, instead of the temples, achieving a comfortable fit even during rapid head movement. Motion-inspired, contoured piping in bold, modern colors. Choose from models with anti-scratch, anti-fog/anti-scratch, or optional 3M™ Scotchgard™ Protector Anti-Fog Coating. U6 rated polycarbonate lenses absorb 99.9% of UVA, UVB, and UVC rays between 200 nm and 380 nm. Meets the Impact-Rated Protector requirement of the ANSI-ISEA Z87.1 Standard SF401SGAF-RED