sunglass frames are lightweight, extremely flexible, and heat and UV resistant. IDEAL FOR ANY OUTDOOR SPORTS - Best for fishing, boating, sailing, jet skiing, driving, running, cycling, climbing, hiking and traveling. You can barely feel it on your face even wear it all day, a reliable partner when you enjoy outdoor. Fashion and stylish design, with rich color combinations of frames and lenses is also suitable for daily wear. WE FOCUS ON YOUR COMFORT - You dont have to squint in direct sunlight with polarized sunglases. Zero fogging issuses: good air flow around top, sides and bottom to prevent fogging from sweat. These sunglasses are perfect with wrap, coverage, block light from the sides perfectly. It is made to fit this snug on your face and you could do any activities, it will stay in place all the time...