A decorative device that simulates volcanic eruptions can effectively relax pressure on the senses，Good for calming, stress relief, and visualizing anger control Each eruption lasts approximately， Turn the bubble upside down it over and it will start all over again and again It’s one of the coolest relaxation desk toys， these liquid motion bubble will actively work to relieve your stress。pleases the eye and eases for comfort. That are very portable and can be everywhere such as the library, schools, classrooms, offices, in the car,They are a mesmerizing great for goodie bag fillers, birthday party favors, carnival game prizes, classroom treasure boxes and more 100% SATISFACTION GUARANTEED：If you encounter any problems using our product, please inform our customer service We are here to make you 100% happy
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