Ray Ban Powderhorn Mirror Evolve RB4357 Sunglasses Dark Grey Photochromic Mirror Light BrownWith its not-so-quiet double bridge and sharp upper rim line, the Powderhorn is always up for an adventure. This frame features upgraded Evolve light-responsive technology, with coloured lenses, including orange and grey. Dare to pair its sporty attitude with a streetwear look to get them talking around the block