LENS MATERIAL: Costa's 580 Polycarbonate provides high clarity, impact and scratch resistance along with lightweight all day wearability. 100% UV protection and the best polarizing efficiency available. LENS COLOR: Blue Mirrored Polarized is best for bright, full-sun situations on the open water and offshore. FRAME FEATURES: Aleta feature a round, black frame with blue mirrored polarized 580P lenses. Made from Costas Bio-Resin nylon. The material is strong, allowing the frames to hold their shape in heat and cold weather, and our trifusion frame technology results in unique color combinations. PROTECTIVE CASE AND CLEANING CLOTH: Costa case and cleaning cloth included to keep your Costa's safe while you are getting after it. VISIT THE COSTA DEL MAR BRAND SHOP: Click on the Costa Del Mar link above the product title to shop the entire Costa Del Mar sunglass and eyeglass assortment.