The Boll Safety SILEX Safety Glasses have an ultra-wraparound frame with PC/TPR co-injected temples for greater comfort. The frames also incorporate FLEX 160 technology to ensure they fit every face perfectly. The wraparound fit provides a panoramic field of vision. The lenses have an anti-scratch, anti-fog coating. These Boll Safety SILEX Safety Glasses have smoke colour lenses. They are approved for permanent wear and certified with perfect optical quality. Designed and used for protection against UVA/UVB and solar radiation, 99.9% UVA/UVB protection. Specification Lens Type Smoke, Anti-fog and Anti-scratch Lens Conforms to EN 1661F/EN 172-Solar 5-3.1 Frame Conforms to EN 166FT