This goggle style features the Photochromic Lens technology.The scope of technical innovation is limitless when it comes to these Photochromic adaptive goggle lenses, they will transition from dark to light depending on the amount of sun exposure.Perfect for that unpredictable weather, or as your everyday go-to goggles.Also the perfect companion for mountain bikers.Specifications:.Inside Interior Lens:Yellow.Triple Layer Custom Fit Foam.Hypoallergenic Microfleece Layer.100% - UV Protection.Photochromic Lens.Vented flow through system.OTG Compatible.Silicone waves.Italian Anti fog lens.Helmet compatible.Category 1, 2 & 3.Dimensions:105mm x 185mm.