Pop Fidget Toys Its Ball Toy 4 PCS 3D Stress Balls

Upgraded the pop fidget balls by adding a valve to the ball so they can be inflated and deflated for better storage. As soon as you open the valve, the ball will automatically fill with air in 3-5 seconds. Once the valve is closed, the ball won’t leak air until you open the valve again. The valve design will not affect the popping and squeezing function. A keyhole is added to every ball, and each ball has a chain. You can use the ball as a keychain or use as hanging decoration.