"4PCS in PackageYou will receive 4 pieces different pop bubble toys((Unicorns, Whales, Octopuses, Crabs) with fresh looks have 4 colors, bright colors and pleasant sounds are sure to please any child and adults Pop, pop, pop Just press the mouse bubbles down and they make a slight popping sound; then flip it over and start again These push pop bubble toys have a discrete pop sound. It is not comparable to bubble wrap in sound but is also just as fun to ""pop.""Universal Sensory ToyThese sensory fidget toys are perfect for people with autism/stress,such as hair pullers, skin pickers and other sensory seekers. Helping them relieve from anxiety. They are also suitable for all kinds of people: elderly, children, and adults can play.Safe to Use Made of silicone, comfortable touch, non-toxic, tasteless, will not cause any harm to humans and pets. Endlessly reusable and washable, too.Smart SizeSmall in size, making it great for playing in a car, bus, or plane, in a restaurant or at school. It's also water-resistant, so you can play with it anywhere & anytime "