UV400 Protection Coating100% UV400 protection coating, blocks 100% harmful UVA & UVB Rays, reduce the load on the eyes and ensure a comfortable view. Polarized sunglasses use material of high quality for safety and impact resistance, and They stand out for its ultralight, clear, elasticity, stability and impact resistance.^ Stress Resistant TR90 Framesunglasses are made of lightweight, flexible and durable TR90 frames. An active lifestyle means that your sunglasses will have to be tough and rugged enough to meet up to whatever challenges you throw at it. The specially designed Stress Resistant TR90 Frames can meet up whatever you dish out to it and more.^ ADJUSTABLE TEMPLESThe ergonomically adjustable temples of pitviper sunglasses offer an exceptional fit for any shape of the face. This system also allows adjusting the height of the glasses and their distance from the face to prevent misting. Suitable for various outdoor scenes.^ Wide ApplicationUV400 Sports Sunglasses are tough and rugged,which are ideal for usage by motorcycle ,cycling, driving, running, baseball,fishing, racing, golf, skiing, climbing, trekking and other outdoor activities enthusiasts. Inner frames of "pit" "viper"can be used for shortsighted lenses.^