Metal frame Polycarbonate lens Non-Polarized UV Protection Coating coating Bridge: 30 millimeters Arm: 140 millimeters FASHION DESIGN: Heart shape design is suitable for any face, which is the most fashionable style of 2018, makes you more attractive and eye-catching in outdoor activities or at the party. HIGH-QUALITY MATERIALS: Environmental Skin-Friendly Materials, metal arms, lightweight and flat, durable shatterproof. UV 400 PROTECTION: Polycarbonate lens can block 100% harmful UVA & UVB rays, restore true color and eliminate reflected & scattered light to keep your eyes healthy. 90 DAYS BREAKAGE WARRANTY ON FRAME & LENS: In case any broken problem happens, Dollger provides 90 days after sale service for all products. 30 DAY MONEY BACK GUARANTEE: All Dollger customers enjoy 30 Day Money Back Guarantee. Customers can return and get refunded in case the purchasing is not satisfactory for any reason. You have no risk to try.