Keep canned dog and cat food fresher, longer with this flexible silicone food lid by Dexas. To use, take a can that has been opened, and gently press the center of this lid down on the can to remove air and create suction. To release, simply lift lid from the edge to access the food. Flexible suction lid measures 4in in diameter and is dishwasher safe. Fits most cans, glassware and small containers. Keep canned dog and cat food fresher, longer with this flexible silicone food lid by Dexas. To use, take a can that has been opened, and gently press the center