It's a JUMPUTTY magic dough! Bouncy modeling clay based on a new formula now ensures even higher jumps. When thrown, the mass bounces wildly. Careful!CRAZE JUMPUTTY modeling clay for children is ideal for shaping your bouncy balls and never dries up. If you leave the CRAZE JUMPUTTY Magic Polymer Clay lying around, the putty will slowly melt and you can watch it do fun tricks. It is also advisable to moisten the surface of the smart paste with a few drops of water from time to time.The original Smart Paste is made with a German formula, free from toxins and ingredients that are harmful to children. Safe to use and guaranteed BPA and gluten free.