These super cute cat toy springs let kittens swat, chew, attack and pounce, stimulating natural hunting behavior and relieving stress; Each set contains 16 cat spring toys, including 4 blue, 4 yellow and 4 pink (or red), green coils. Perfect for one or more cat households; An interactive cat toy, colorful, our kitten coil springs jump randomly, let them chase, swat and run around; We use safe plastic, safer for cats and kittens. It is lightweight, durable and safe to chew. Just replace as needed; These cat coil springs keep them active and are a great way to build a strong bond with your pet, which is good for your cat's long-term physical and mental health.