High-Quality Metal Frame; Multi-Layer TAC Polarized Lenses; Eliminates 100% of UVA/UVB Harmful Blue Light and Glare; High-Quality Stainless Steel Arms with TR90 tips; Standard Stainless Steel Hinges; Adjustable Nosepads for a Comfortable Secure Fit; Scratch and Impact Resistant. The Bertha Moon sunglasses offer a stylish design with advanced lens technology for optimal eye protection and comfort.