�� Polarised and UV400 protection: The polycarbonate polarised HD-coated mirror lenses offer excellent optical quality, can restore true colours and reduce reflections. The UV400 protective coating blocks  harmful UVA and UVB rays, thus eliminating glare, reducing eye fatigue and making the landscape clearer and softer. It protects your eyes from sand, wind and sunlight. �� TR90 frame and myopia frame: The lightweight and robust stress resistant TR90 frame makes the weight of the entire bicycle. Comes with a myopia frame, it can be inserted into the groove near the nose clip of the sports sunglasses. You do not need any tools for installation. You can enjoy cycling or exciting outdoor sports, even if you are short-sighted. �� Multifunctional occasions: an ideal choice for cycling, motorcycling, running, skiing, baseball, volleyball, tennis, driving, triathlons, fishing, racing, mountaineering, softball, trekking, golf, hiking, boating, hunting and other outdoor sports.