Durable Stainless Steel Frame; Anti-Scratch And Anti-Fog Multi-Layer TAC Polarized Lenses; Eliminates 100% Of UVA/UVB Light; Lightweight Stainless Steel Arms; Adjustable Nose Pads For A Comfortable Secure Fit; Standard Stainless Steel Hinges; Optical Quality Polarization Triacetate Cellulose (TAC) Polarization Process; 100% FDA Approved; Impact Resistant. The Breed Norma includes the following features: durable stainless steel frame, anti-scratch and anti-fog multi-layer TAC polarized lenses, eliminates 100% of UVA/UVB light, lightweight stainless steel arms, adjustable nose pads for a comfortable secure fit, standard stainless steel hinges, optical quality polarization triacetate cellulose (TAC) polarization process, 100% fda approved, impact resistant.