1 Three layers of super quality sponge 2 Environmental protection 3. Windproof and sweat absorbent 4. Fit face well 5. European ECE standard production process 6. Adjustable length strip 7. The frame is light and tough, resistant to falling and durable 8. The lens pin is made of metal, durable and high-grade look 9. REVO lens, providing excellent eye protection and utilize the principle of night-vision goggles so that the lens has the same visual effect in day or night.