Abstract: An improved device for identifying an individual pop-top can having a pull tab for levering open the can is provided. The device includes a flexible resilient sleeve of elastomeric plastic or rubber or the like which slides over and seats on the free end of the pop-top can tab. The sleeve has a distinctive color, design, texture, written indicia or any combination thereof, in order to identify the individual can. A kit is also provided which includes a number of the sleeves, all of which differ from each other in color, texture, written indicia and/or design. One embodiment of the sleeve includes an integral plug which extends upwardly from the top of the sleeve and is shaped and dimensioned to plug the can opening to preserve the contents thereof after opening. The sleeve is simple, inexpensive and attractive and enables users of similar cans to identify their own cans and thus not drink from another user's can.