The lens is ballistic with 1.1g ball to shot by the speed 180-245m/s, very good result.
The lens is fog-resistant.
The Eye Wear Mask Protection Glasses is also done fire-resitant treatment.
Please see attached video for reference.
Any interest, please contact us by WhatsApp/Viber/Wechat:8613302019738 Or hengtai-armysupplier@hotmail.com, thanks.