X2 Xcalibur Combat Goggle Glasses – this super strong goggle features a full nylon frame and SBR Foam face seal for ultimate focussed protection Optical Class 1, highest quality clear vision polycarbonate lens Mechanical Strength BT – medium energy impact protection from high speed particles, at extreme temperatures. Nylon Frames resistant to, liquid droplets, coarse and fine dust particles and gas. SBR Foam full face seal for ultimate comfort and protection Supplied with Microfibre storage pouch. Additional UV Filter blocks harmful ultraviolet rays Ultra strong, adjustable elastic headband for long term strength and comfort Tested and CE Approved to EN166 1 BT 3 4 5 and EN170 2-1.