Mix your own extra-cool bouncy balls – your creations will be ready in just 10 minutes. Which one will bounce the highest? With the special granulate in 6 colors and an additional 3 glow-in-the-dark colors, you can make up to 20 power balls. When the first balls lose their bounce after a few days, you’ll definitely have more materials on hand! The set includes two different molds for round and square bouncy balls, and the funny wiggly eyes add variety to the fun. Kids aged 8 to 12 will also learn about glow-in-the-dark colors in exciting info texts and fun facts. A KOSMOS experiment kit for immediate fun and knowledge gathering!

Which bouncy ball will bounce the highest? Who has the coolest bouncing ball? In just ten minutes, kids can find out with this KOSMOS experiment kit! Using the special granulate and various molds, children aged 8 to 12 can mix their own round and square bouncy balls in a variety of colors. The glow-in-the-dark bouncy ball is especially cool, shining brightly in the dark. When it gets a pair of wiggly eyes, it becomes even more fun. Once the first balls have dried out and lost their bounce after a few days, it’s time to make new ones. Luckily, the granulate in this set is enough for up to 20 power balls! Exciting info texts and fun facts explain why some colors glow in the dark and how deep-sea animals take advantage of this phenomenon.