【Universal Size】PWOD pet food can covers contain three rings with inner diameters of 2.5",2.9",3.3"(slightly stretchable) that fit most standard types of pet cans, such as 3 oz, 5.5 oz, and 12 oz cans.These lids also fit many people's food containers 【Good Air Tightness】Very soft and flexible, It has excellent sealing, Make sure there is a well-sealed edge to keep your food or pet food fresh and delicious for a long time 【Easy to Use&Clean】It's easy to pull on or close because of a small handle design,Dishwasher safe 【Food Grade Material】Our dog/cat food canning lids are made of safe and healthy silicone that is BPA free and can come into direct contact with food. It will not break, melt or warp. High temperature resistant 【More Color】These pet can covers contain blue, green, orange, red black, pink, yellow, etc. also can be a good gift Perfect for most families with pets at home.