Material: sisal Built-in rate stone to stimulate cats' interest in capturing: The hollow sphere is filled with rattling stones, which makes a rustling sound when shaking and colliding, attracting cats to explore the source of the sound Colorful rainbow ball toy: natural jute rope is used for tight linkage, full of endless exploration and curiosity of cats, locking the attention of cats while rolling, making cats love to let go of their paws Ease boredom and the perfect gift: Cats have a natural instinct to swat and pounce. These cute catnip toys can provide your cat with the best way to relieve boredom. Make a better relationship between your cat and you, plus they make a great gift for your cat-loving friends who also have bored cats at home. Multiple uses: The lanyard design makes it easy to hang the rope ball in various places for more versatile play; the 4.5cm size is easier for cats to handle, and the soft but rough jute "paws" feel can be used to sharpen cats' claws while entertaining them.