A comfortable fit and a ton of Bolle replaceable lenses make the Bolle Bolt Sport Sunglasses an instant winner for any outdoor activity - whether you're slicing through the powder, biking down the mountain or cutting up the trail. It is a tennis Competivision lens to enhance the color yellow for more clarity playing tennis! The Black frame is the large lens (replaced the Vigilante) while the white frame Bolt is the smaller ens ( replacing the Parole).