_x000D_ _x000D_ Feature: The outer frame of the eye mask is equipped with a ventilation system to increase the user's ventilation and comfort during operation. High quality light weight hard and veneer, suitable for any face shape design suitable for use with night vision goggles. Advanced design for all kinds of helmets, sights, telescopes, night vision system. The lens is made of imported POLYCARBONATE fiber (POLYCARBONATE) reinforced lens Suitable for riding, sports, climbing, grinding, construction, laboratories,ect. Can effectively prevent iron, sand lime, gravel and other objects of the eye caused by splashing wounded. Effectively prevent the impact of high-speed particles from the upper and side portions, comfortable to wear. Carbonate lens: high-speed anti-particle impact, absorbing 99% UV. Indoor / outdoor mirror reflective lenses, anti-scratch coating for applications requiring frequent access to indoor / outdoor operation personnel protective glasses. Specifications: Material: PC aerospace material Color: transparent, yellow, tawny, gray,Dazzle colour Note: 1.We provide clear pictures, measurements where possible. Please check as much as possible to make sure the item is the one that you need. 2.Please allow 0.5-1 inch difference due to manual measurement.(1inch=2.54cm) Package Included: 1 pair x Protection Glasses _x000D_