G - 15 Diamond Hard

THE DIAMOND HARD scratch protection system is an exclusive lens surfacing technology from Bausch and Lomb that protects lenses from abrasion during outdoor sports or activities. an amorphous diamond surface coating make glass lenses ten times more scratch resistant than ordinary. it also reduces surface friction so water beads easily off the lens. the diamond hard surface is bonded permanently to the lens. it is available in the Ray Ban Survivors Collection.