These Bolleacute; Safety CONTOUR Safety Glasses have Polarised lenses. Approved for permanent wear and certified with perfect optical quality, they offers unbeatable comfort by filtering glare and reflections. Ideal for the maritime environments. They filter 99.99% of UVA/UVB. The polarizing filter contains perfectly aligned crystals, which block horizontally polarized light. Acting like a Venetian blind, it eliminates dazzle and only lets "'useful' light pass through. Polarised lenses offer incomparable comfort on water, and also for outdoor activities, driving and around town. Specification Lens Type: Polarised, Anti-Fog and Anti-scratch.Lens Conforms to: EN1661F/EN172-Solar 5-2.5.Frame Conforms to: EN166FT.