All Seek lenses block 100% of UVA, UVB and UVC rays and are impact resistant. Our lenses meet and exceed the impact resistance standards of ANSI Z80.3-2003 and EN 1836:2005 as well as the FDA regulation 21 CFR 801.410 for impact-resistant lenses. Seek Optics polarized replacement lenses will protect your eyes against excessive glare. Buy our polycarbonate lenses for extra impact protection! Our versatile lens tints offer you great color perception and anti-fatigue qualities perfect for sunny environments. They are perfect for driving, baseball, tennis, football, soccer, water sports, and all other outdoor activities!