"Canned food represents part of a dog or cat's diet, but saving leftover portions can be a challenge, often leading to premature disposal of the can's contents. The Flex-O-Lid™ is made of flexible rubber, featuring a wide overhanging lip, which makes it effortless to pop on and off the can. The Flex-O-Lid™ comes in two sizes, small and large, and can accomodate all sizes of canned pet food."