The Sinner Mohawk Ski Goggles offer a fantastic level of versatility as they come with interchangeable double blue revo lenses & double orange lenses so that you can change your goggles to best suit the weather for fantastic visibility all day long The double blue revo lenses are cat 3 & ideal for using in beautiful bright sunny conditions then if it should cloud over start to snow or a light fog should start to roll in then simply pop out the revo lenses & replace them with the cat 2 double orange lenses which will increase the contrast nicely to avoid any white outs Both lenses are double vented & offer 100 UV protection & have a high performance anti-fog coating to offer you excellent vision while you are enjoying a day on the slopes These lightweight goggles are incredibly comfortable to wear They have a soft hypoallergenic foam padding on the inner frames & the adjustable strap are helmet compatible & feature a tacky strip on the inside for a more reliable fit making these a fantastic choice of versatile goggles for your next snowy adventure