Bolle Ski Goggles Y7 OTG BG137001 Matte Black Phantom Green Emerald Photochromic Flash Grey Photochromic The butterfly frame shape and Smoke with Silver Flash The butterfly frame shape and sleek acetate construction give these sunglasses a stylish and modern look Persol Sunglasses 649 24 31 Havana Crystal Green are technically innovative as well is impressively stylish with the Victorflex system that gives the bridge maximum flexibility with metal inserted into the acetate as seen on the bridge of these awesome Persol shades as well as the classic silver arrow on the temple designed for adults seeking premium performance with the added convenience of wearing prescription glasses underneath which automatically adjusts to changing light conditions for optimal visibility