A FUN AND EDUCATIONAL GIFT FOR ALL AGES: This bouncy balls kit is a very fun diy craft project for kids. The molds are easy and switch up all the different color combos design your own colors and shapes and the balls bounce great! It fascinates children as soon as they pull it out of the box and is a perfect STEM project. JUST POUR DIP AND BOUNCE: Put the molds together and tight it up otherwise it expands so much it mold pops open. Fill with whatever powder you want and drop under water for 2 mins (warm water would work better). Then unmold the ball and let it dry for another 15 mins. Walla! A real crystal bouncy ball is born! Manufacturered by XXTOYS. PERFECT PARTY FAVORS: This crafts for kids ages 8-12 may seem simple but it is very fun to use. You can play with this arts and crafts for kids in various occasion. Great set for individual play or as group party favors. Perfect group craft project for rainy Day Birthday Easter Christmas School Science Project for kids SATISFACTION GUARANTEE: All of our XXTOYS products enjoy lifetime warranty if there is any question with the magic ball craft kit just contact us freely. We will do our best to help you. CREATE YOUR OWN BOUNCY BALL: XXTOYS bouncy balls for kids come with everything you need. 12 individual bouncy ball making kits; each comes with 2 bouncy powder bags (in various colors) 1 mold and instruction paper. In total you can make 24 bouncy balls in 4 distinct shapes with 6 color choices. And there are GID balls for the lucky boy!