Durable Stainless Steel Frame; Anti-Scratch And Anti-Fog Multi-Layer TAC Polarized Lenses; Eliminates 100% Of UVA/UVB Light; Lightweight Metal Arms; Adjustable Nose Pads For A Comfortable Secure Fit; Spring-Loaded Stainless Steel Hinges; Optical Quality Polarization Triacetate Cellulose (TAC) Polarization Process; 100% FDA Approved; Impact Resistant;