1As long as you press the bubble, it will make a slight popping sound, players take turns pressing down. The player who presses down the last one will lose. Then flip them and start again. 2Can effectively relieve anxiety and stress, or kill the time at home. Suitable for baby to play. 3For people with autism and stress, this is a great, unique and novel gift that can help them get rid of anxiety. 4Made of high quality silicone material, safe and nontoxic, washable and reusable, durable for use. 5The toy helps restore mood, promote parentchild interaction. Light weight and portable, suitable for different occasion.