Material: SiliconeWeight: 20g/pieceProduct size: 10cm *4.5cmPackage include: 5 x mini Stress Reliever1.Relieve stress help restore the mood, home essentials, parent-child games, autism, games that the elderly, children, student, and adults can play.2. It is very small and light weight, it can be hung on your body with the key, you can take it out to play at any time.3.Endless Fun: Just press the mouse bubbles down and they make a slight popping sound; then flip it over and start again! Endlessly reusable and washable, too.4.Puzzle Game: Players take turns to press as many mice as they want in a row. The player who presses the last mouse will lose. It exercises children's thinking ability, which is very interesting.5.There are no loose or noise-making pieces, 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, even during bath time!6.Silicone Material: Made of high-grade Silicone materials, safe and non-toxic, Parents can rest assured, to buy for your children.