1. Materials - TAC lens, Metal frame. Fashion and aviator studded shape design. Eco-friendly material, no harm to your skin. All glasses comply with EN 1836:2005 and US FDA 21 CFR 801.410 and FDA dropball test. It's perfect sun glasses for womens and mens.
2. Function - Non-Polarized, 100% UV400 protection lenses guards against harmful UVA & UVB rays. To protecting your eyes against long term UV damage and keeping your eyes healthy when you go out. Eliminate reflected light and scattered light and protect eyes perfectly.