The Spark is right at home in both urban environments and sporty activities. Their photochromic Glare Control lenses adjust glare protection according to lighting conditions, ranging from 10 to 46% visible light transfer, making this a cat1 ... cat3 model. - Grip Tech temples for great grip - Soft nose pad - Lens height 46 mm - Bridge 13 mm - Temple length 140 mm - Base 6 - Lens size 54 mm Julbo has been making sunglasses for more than 135 years. By buying Julbo, you are investing in a quality product and can rest assured the glasses offer perfect UV protection.