Yufenra Polarized Sports Sunglasses for Running Cycling Fishing Outdoor Activities plastic frame plastic lens polarized Lens width: 58 millimeters TAC POLARIZED LENS- The Tac(Triacetate Cellulose) Lens includes 9 layers,100% UV400 protection coating, blocks 100% harmful UVA & UVB Rays. Restore true color, eliminate reflected light and scattered light and protect eyes perfectly. TR62 Frame: Even strong and light Tr62 frame than PC(polycarbonate) frame 30 Day Money Back Guarantee- All YUFENRA 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.