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The Uvex Vision L Optic Goggles are an OTG - over the glass - goggle, so you can wear your prescription specs and still enjoy the benefits that a good pair of ski goggles provides. The PC lens is anti-fog, scratchproof and optically correct for great visibility on the slopes.OTG- over the glass goggles.Double Lens Cylindrical.Supravision PC lens is super anti-fog coated, scratchproof, break resistant, optically correct and anti-static.Speed clip strap fastener.Laser Gold Lite lens with 100% UVA, UVB and UVC absorption (uv-ex) incorporating UV 400 technology.Clima-Zone venting system.Avg. wt. 5.3 oz.Import.