I bought 1 set of sunglasses but as soon as I obtained it I noticed a manufacturing unit defect on polarized lense. No aid, no response. Don't suggest. They may be made out of different types of material and come in various shades. The smartest thing about them is that https://edgarpbjhc.topbloghub.com/34192692/helping-the-others-realize-the-advantages-of-kingsevensunglasses