Ethical Pet Yarn Puff Balls Cat Toys (4-Pack) – Four soft, fluffy pom-pom balls made of colorful yarn, each about the size of a ping-pong ball. These light-as-air puff balls are silent when they move (great for night play) and easy for cats to bat, fling, and carry in their mouths. The gentle yarn texture is pleasing for cats to claw and bite, and while there’s no loud noise or flashing light, the simple rolling and skittering of these pom-poms keep cats happily occupied in imaginative play.