DescriptionThe Bertha Betty includes the following features: high-quality TR90 frame, TR90 is made with a swiss technology to be super flexible durable and lightweight., multi-layer TAC polarized lenses, eliminates 100% of UVA/UVB harmful blue light and glare, high-quality TR90 arms, standard stainless steel hinges, scratch and impact resistant.SKU: M0840148808218Product Details & CareHigh-quality TR90 frame. TR90 is made with a swiss technology to be super flexible durable and lightweight. Multi-layer TAC polarized lenses. Eliminates 100% of UVA/UVB harmful blue light and glare. High-quality TR90 arms. Standard stainless steel hinges. Scratch and impact resistant. Sunglasses | Betty Polarized Sunglasses | Bertha