Push Pop Bubble Fidget Sensory Toy is a great gift for people with special needs and help to relieve their anxiety. It is simple, easy to play both for kids or adults, and designed for all ages. The food grade silicone material is BPA-free, safe, odorless, easy to clean, palm-size, easy to carry and portable. So you can take it out anytime and anywhere. Game Rules: Each player in turn presses any number of bubbles in any row. Opponents can also press unpressed bubbles in that row/other row. The player who presses the last bubble is the losing side. Turn the toy over and you can have the next round right away. A best-of-five set system is usually used.