Specification: Material: Silicone Size: 12*12*1.5cm\4.7*4.7*0.6inch Age: 4Y+ Function: Pair battles, odd and even number practice, quick reasoning. Bullet points: 1. Material: Silicone, safe and no toxic, will not cause harm to people and pets. 2. Novel decompression toys: Relieve stress, help restore mood, household necessities, parent-child games, autism, games that the elderly, children and adults can play. 3. Did you catch your child, or even yourself, suddenly jumping out of the box? Then you will fall in love with this bubble trouble. 4. Comfortable bubbles: Press the bubbles, they will make a slight sound; then flip them and start again! Can be reused and cleaned. 5. Bright colors and pleasant sounds will surely satisfy any child! An ideal gift for you, your family and friends. Package included: 1*Sensory Toy Notes: 1. Due to various factors such as monitor brightness and light brightness, the actual color of the product may be slightly different from the picture displayed on the website. 2. Please allow for slight manual measurement bias in the data.