STACKABLE AND STABLE CONSTRUCTION: This caterpillar cat toy is made of extremely strong and tear-resistant PP that withstands crazy cat antics. Removable multi-layer for easy cleaning and non-slip pad to prevent slipping. It is therefore perfect for one or more cats. SPIDER BALLS KEEP CATS BUSY: The Tower of Tracks cat toy stimulates your cat’s senses and hunting instinct. This increases their sensitivity and does not result in any tracking of the furniture in the home. KEEP AWAY LONELY: This trackball tower provides hours of training and personal enjoyment for health care and eliminating pet boredom and depression as your cat can play on their own when the master is not at home. PLAY TOGETHER: Two or more cats play this toy together, which makes the cat happier and strengthens friendship. 4-LEVEL DETACHABLE: Interactive multi-level cat toy, permanently stacked with cute cat face on the top level. Fun to entertain your cat for hours. Product description Color: sky blue Interactive cat