The Warby Parker Elio Sunglasses in the Crystal Frame feature a stylish square design with a clear acetate frame. With a magnification strength of -1, these sunglasses are perfect for both men and women who are looking for a chic and functional accessory. The lenses are made of polycarbonate material and have anti-reflective technology, providing UV400 protection for your eyes. With a temple length of 145mm, these sunglasses are a fashionable choice for any outdoor activity.