Pit Viper Sport google, with Polarized REVO Coated Lens, offers 100% UV400 protection, which blocks 100% harmful UVA & UVB rays. Polarized lens provides comfortable and improved visibility by embedding vertically oriented filter layer into the lenses to block out intense horizontal reflections (glare). REVO lenses are scratch and impact resistant and can offer perfect clarity of vision. TR90 frames are with the highest quality, light weight and stronger durability than PC, to ensure the durable safety and avoid breakage while engaging in sports and recreational activities.Those factors are perfect choices for outdoor sports and activities, such as driving, fishing, skiing, travelling, hiking, boating, and it’s also suitable for high fashion decoration and daily wearing all year around.