The Delta is a sleek full-frame sunglass featuring polarized lenses with a super-hydrophobic coating. The polarized lenses reduce glare & improve clarity while the super-hydrophobic coating prevents water from clinging to the lens. Water instead clings to itself and beads off. Super-hydrophobic coatings are also anti-static preventing dust & dirt from sticking to the lenses. The lenses are Scratch resistant and have 100% UVA/UVB protection. Smoke lenses are best for maintaining the true colors of what you're looking at. They block the most amount of light, which will help to reduce eyestrain if you'll be outside for an extended period of time. Epoch Eyewear is a Veteran owned and operated company. We are proud to be a part of the Veteran community and build a company that provides jobs and great products.