Nickelodeon SpongeBob Fidget Popper Toy Keychain toys are made of high-quality silicone material, safe and non-toxic, lightweight. Pop sensory fidget toy are resistant to falling, abrasion, and extrusion, endlessly reusable and washable! Fidget toys can effectively relieve anxiety and stress, helping restore mood, train logical thinking, and promote the parent-child communication. Fidget toys are easy to play. Players take turns pressing down any number of pop bubble they wish in a single row. The player who presses down the last one will lose. Then flip them and start again. Endless fun and joy for kids to enjoy!