Specification: Lightweight Design-Ultralight Frame Weight only 29G. you will forget you are wearing them in the middle of an adventure you cannot let heavy sunglasses weigh you down.SHIMANO Sunglasses are ideal for usage by motorcycle, cycling, driving, running, baseball, fishing, racing, golf, skiing and climbing, trekking or other outdoor activities enthusiasts. The inner frame can be used for shortsighted lenses. 400 UV PROTECTION Polarized sunglasses use very good material for safety and impact resistance, and it stands out for their ultralight, clearness, elasticity, stability, and impact resistance. Villains harmful to the sun and to the UV reflection (UVA and UVB) harmful reduce the load on the eyes and ensure a comfortable view. Excellent After Sales Service - Excellent and fast. By buying SHIMANO sports sunglasses, you could not only receive quality products but also a great shopping experience. Specification: Conventional Lens Material: PC Anti-UV Grade: UV400 Mirror frame material: PC