A great science set to make super fun real, brightly colored bouncy balls! The set contains spherical molds and many bags of color powder that you need to mix with water to make these magical balls. The process is quick and simple: you simply immerse the mold in water, let it rest for a few minutes... and you're done! Super fun and quickly ready to play with. Includes extensive illustrated manual that explains the process simply and simply. Suitable for children from 8 years. A great science set to make super fun real, brightly colored bouncy balls! The set contains spherical molds and many bags of color powder that you have to mix with water to make these 'magic' balls. The process is quick and simple: you simply immerse the mold in water, let it rest for a few minutes... and you're done! Super fun and quickly ready to play with. Includes extensive illustrated manual that explains the process simply and simply.