YOU ARE BIDDING ON A NEW PAIR OF OPTX HYDROTAC STICK-ON BIFOCAL LENSES. STRENGTH OF THESE LENS ARE +1.75. THESE BIFOCAL LENS ARE MADE OF A POLYMER ASPHERIC MATERIAL. EACH LENS IS 1.2" IN DIAMETER, ARE REMOVABLE AND REUSABLE, ADHERE TO ANY EYEWEAR SUCH AS SUNGLASSES, SAFETY GLASSES, GOGGLES, ETC AND ARE EASILY APPLIED BY ADDING WATER TO ADHERE TO THE LENS AND EASILY REMOVED BY PEELING OFF LENS TO SAVE FOR NEXT TIME