BETAFIT EIGER contour fit clear Safety Goggles have indirect vents for protection against impact, dust and chemical splash. Optical Class 1, highest quality clear vision polycarbonate lens Mechanical Strength B – medium energy impact protection from high speed particles Soft and flexible inner face seal for ultimate comfort and protection Indirect vents and Anti-Mist coating prevents heat and moisture build up within the goggles Anti-Scratch and Anti-Mist coated polycarbonate lens for excellent all round vision. Ultra strong, wide elastic headband for long term strength and comfort Tested and CE Approved to BS EN166 1 B 3 4:2002