DUCO Sunglasses Polarized for Running, Cycling, Fishing, Golf TR90 Frame Unbreakable Exchangeable 5 Lens 0893 (Black) Frame and Lens are made of high quality TR-90 and durable enough for long time using and also have 100% UV protection Shatterproof Lens:The Main Gray lens is Polarized lenses against strong Sunlight, the Other 4 Lenses are colored sunglasses for Different Environmental Condition All of our lenses block 100% of UVA, UVB and UVC rays, and harmful blue light to 400nm. These harmful rays are a leading cause of cataracts, skin cancer and wrinkles around the eyes-all great reasons to block them out. Come With an elastic sport belt which you can interchange it as and when you like it to be strap or bow.Inner frame can be used for shortsighted lenses. Lightweight design is ideal for usage by motorcycle and cycling, driving, running, fishing, racing, skiing and climbing, Trekking or other outdoor activities enthusiasts. Allows for easy and convenient to carry , come with hard protection box.