[2022 New Design]: Added a multiplication table of 1-12 in 169 bubbles, allowing children to learn multiplication formulas while playing, making learning more interesting, for teachers, the multiplication table is also a good teaching tool. [Comfortable experience]: When you press the bubbles, there will be a slight popping sound, which will make people feel comfortable and have an effect to relieve stress. This is a good thing for those with autism or ADHD. [Premium Material]: Made of high quality silicone material, comfortable, durable and soft Washable. It is water-proof as well, so you can freely wash it when it is dirty. [Large size]: A total of 169 bubbles, the size is 10.24*10.24*0.63in (26*26*1.7cm), which is beneficial to parents and children playing together, enjoying good family time. [Great Gift]: It makes a fun gift for birthday parties, rewards, educational tools, and more. It can improve children's mathematical multiplication ability while allowing children to play happily.