Ethical Pet Spot Atomic Rubber Bouncing Balls (2-Pack) – Two uniquely shaped rubber balls that bounce in unpredictable, zigzag patterns to keep your cat guessing. Made of non-toxic, bumpy rubber, these “atomic” balls dart in random directions when they hit the ground, triggering your cat’s pounce-and-chase instinct. They are lightweight and perfectly sized for cats to swat and chase, turning solo play into an exciting hunt and providing plenty of exercise and mental stimulation.