Simply add water and watch these amazing polymers begin to grow within minutes. This set contains five different types/shapes/colors. My favorites are the tiny spheres, which grow to the size of a small marble. You can bounce them, squish them or freak out your friends with them.
Fun kit contains 4 astounding polymers, including GobbledyGoop, Slippery Spheres, Silly Squares and JellyStones!