FUSE Bronze Mirror Tint Replacement Lenses for Oakley Tightrope plastic frame interchangeable lens Non-polarized lenses Lens width: 58 millimeters Lens height: 35 millimeters Bronze Alloy Mirror (comparable to Gold Iridium) Mirror with Brown Tinted base lenses. Completely block harmful UV rays, providing 100% UVA/UVB protection. Improve contrast sensitivity by 75%, allowing wearers to experience the outdoors with increased clarity of vision and enhanced color perception versus ordinary tints. Constructed from the highest quality polycarbonate material for the ultimate in safe and clear eyewear. Tinted lenses provide maximum sunlight control for increased comfort and a decrease in sun-blinding.