Plastic lens. Mirror Coating coating. UV400 PROTECTION: 100% UV400 protective for this sports sunglasses. Which is good for keeping lens clear. In daily use, our glasses can provide a more enjoyable cycling experience. DURABLE FRAME: Full frame design with PC memory material, cycling sunglasses has great durability, combine with high-quality lens can protect your eyes from strong impact. POLARIZED LENS: Polarized lens can show the most reality and colorful world to you. Increasing contrast and deepening perception, thereby protecting your eyes perfectly, ideal for partly cloudy to sunny conditions, also good for cycling, fishing, running, climbing, etc. CURVE & WIDER DESIGN: Wider lens can not only provide more bigger field of vision, also more windproof, Curve design lens have low air resistance which is suitable for high-speed riding. ULTRA LIGHT: 30g ultra light glasses with anti-slip nose pad and rubber ear pad, let your wearing more comfortable even long time using.