Bertha Polarized Sports Sunglasses for Running Cycling Fishing Golf TR90 Z8350 polarized TAC POLARIZED LENS- 100% UV400 protection coating, blocks 100% harmful UVA & UVB Rays. Restore true color, eliminate reflected light and scattered light and protect eyes perfectly. Stretchable magnetic temples to enable the glasses hang on neck PRODUCTS DIMENSION-Lens height:50mm (1.97 inches); lens width:56mm (2.20 inches); arm length:139mm(5.47 inches); nose bridge:13mm (0.51 inches); Total length:142mm (5.59 inches). LIFETIME BREAKAGE WARRANTY ON FRAME & LENS - Frames and lens are unbreakable for no risk purchasing. In case any broken problem happens, contact the seller of Bertha without hesitation to solve the problem until satisfaction.Bertha provides lifetime after sale service for all Bertha products. 30 DAY MONEY BACK GUARANTEE- All Bertha 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.