Material: Silicone<br> Weight: 65g/piece<br> Product size: 0.98in * 0.98in * 0.59in (12.5 cm *12.5 cm * 1.5cm)<br><br> The rules are simple and you can make your own.<br> 1. Rock, paper, scissors to see who goes first.<br> Each player takes turns to press the raised mouse, the mouse can be pressed continuously, twice in a row. The person who owns the last mouse will be lost.<br> 2. Under the basic rules, you can decide the rules yourself too, for example: you can only press a few times at most. When I press the middle mouse button, the other side can only be pressed on one side of the mouse, not the entire row. See how it works. Buy one and have a try.<br> 3. More ways to play.<br> In the advanced version, game play is the same except the players can only pop bubbles in a row that are directly next to each other without any popped bubbles in between. <br><br> <b>Package include:</b><br> 4 x Stress Reliever Toy