HKBAYI Fashion Men's UV400 Polarized coating Sunglasses men Driving Aviator Mirrors Eyewear Sun Glasses for Men with Case Box UV400 PROTECTION-Lenses block 99% or 100% of UVB and UVA rays.UV 400 indicates an eye protection item that has been optimized to prevent eye exposure to both UVA and UVB radiation. One of the biggest differences between UV 400 protected items as compared to other items that protect against the sun's radiation is the fact that UV 400 protected items are capable of blocking light rays as small as 400 nanometers. TAC LENS-sunglasses are made with the most high quality polycarbonate lenses, which are ultra lightweight and shatterproof.They are impact resistant and offer perfect clarity of vision. Also, TAC lenses are scratch and impact resistant, offering 100% UV protection. HIGH QUALITY FRAME - Made with only the highest quality materials, these sunglasses were constructed using special design techniques in order to ensure durability and avoid breakage while engaging in sports and recreational activity.