POLARIZED UV400 PROTECTION LENS- 100% UV400 polarized protection coating, blocks 100% harmful UVA & UVB Rays. Restore true color, eliminate reflected light and scattered light,make the scenery more clear and soft and protect eyes perfectly. Saltwater resistant coating ensures the lens not be corroded by sea water or sweat, which means the lens is durable and unbreakable. Enjoy your beach sunbathing, the sunglasses have got you covered.