PetFavorites foam soccer balls are designed for cat exercise, interactive playing with your kitty. Your kitties will enjoy and even go crazy with bouncing these balls down the stairs or flipping them through the air and chasing them. Even if you get tired, just throw these sponge cat balls and your kittens also can stay entertained with them for a long time. You and your cats can all get fun from them. There won't be easier cat toys for your cats, especially for fat cats.