100% UVA/UVB protection Polycarbonate lens Alloy frame 1. Retro Square Oversized Rimless Sunglasses is full of youth energetic, making it an ideal fashion accessory or gift for your friends and families. 2. Alloy frame give you a more comfortable wearing experience, skin friendly and reduce the presure of your nose and ears. 3. High quality one piece nose pads is stable and durable, non-slip and suit various nose features. 4. Exquisit hinge durable for long time usage. 5. UV400 Lens has Anti-glare, Anti-reflective, Scrach proof and Shatterproof character, that can block out harmful UVA/UVB. At the meanwhile, it restore the true color, give you a more HD visual clarity and soft vision, eliminate eye fatigue and protect your eyes better.