Get the perfect mix of style and performance with the Proof Eyewear Butte Eco Polarized Sunglasses. The Butte is largest pair of shades in the Eco collection and features a slight base curve and will offer max protection while fishing, hiking or biking all with a style that can be worn anywhere. The Butte has a polarized lens that reduces the glare off shiny surfaces and will keep your eyes protected from the harmful UV rays of the sun. Handcrafted From Cotton Based Acetate and Sustainably Sourced Wood, 6 Base Performance Wrap Design, Stainless Steel Spring Loaded, Water and Sweat Resistant, Best Use: Streetwear/Driving, Lens Material: Triacetate Cellulose, Frame Material: Cotton Based Acetate and Wood, Polarized: Yes, Face Size: Large, Warranty: 1 Year, Lens Type: Polarized, Model Year: 2019, Product ID: 563917, Frame Shape: Rectangle / Square, Model Number: BTEMGRYSKYPOL, GTIN: 0810773026493