POLARIZED LENS – specialized multi layer lens designed to filter and block over 99.96% of glare –Small River Poarized lenses blocks out intense horizontal reflections (glare) by having vertically oriented filter layer embedded in the lens, providing maximum comfort and improved visibility. These lens are are tough, lightweight, scratch resistant, and have high optical clarity (distortion free, clear vision), making them an excellent choice for general outdoor and water sports activities. --100% UV400 Protection Lens,Blocks 100% Harmful UVA,UVB & UVC Rays ---We know how uncomfortable frames can be and how this affects every wearer. We care about your vision and want to help you keep your sun glasses on for as long as you need them. Therefore we picked ultra-light materials for glasses frame, we took care so that every edge is smoothed and polished so you will even forget that you wear it outside. --vgAll Small river sunglasses comes with one year warranty on frames and lens as well as a 30 day money back guarantee