SPOT Shimmer Balls Cat Toy allows cats to bite, swat, chase and pounce for mental stimulation and boredom relief. Each set comes with 4 total toys that are ideal for a single feline or multiple cats to play with. This interactive cat toy makes a rattle sound when rolled that attracts cats and entertains them with fun play. These cat toys are hard for your cat to resist, encouraging your feline friend to spring into action with zany delight to bat and bobble throughout the house. A great way to promote physical exercise and agility for indoor cats, these cat toys help you build a better bond with your cat for a lasting relationship.