Get ready to bounce with extreme excitement with this bouncy ball DIY kit! You can design and make them yourself! This kit contains all you need to make a mesmerizing striped, glowing bouncy-ball and a hi-tech flash ball that lights up when it bounces! There are also 10 step-by-step illustrated projects for making a squishy-stress ball that bounces, a bouncy crystal ball and the classic rubber band ball. The illustrated book includes a full range of solo and group games to play using the ball creations. It is a way of bringing more STEM fun into home and group play. Rmended ages 8 and up. Gender: unisex.