Gray lenses are great for sunny days, as they offer light reduction and do not distort color like other lenses. Furthermore, these sunglasses prevent eye fatigue. Fishermen who fish in rivers that have grey bottoms should opt for grey glasses
TAC lenses are formed from sheets of compound plastic with a multi-layered lens technology. It is the lightest polarized lens available and the efficiency of the polarization is 99%.
This coating keeps the sun’s UV rays from harming your eyes. 100 % UVA, UVB and UVC Protection.
In the face of all the advancements in eyeglass lens coatings, eyeglass lenses are still not scratch proof – not even glass lenses. However, the Leech eyeglass lenses are treated front and back with a clear, hard coating which make it much more scratch resistant.