Slippery Spheres Bag of Knowledge Primary Colors

Slippery Spheres (Blue, Yellow, Red) are fun to throw, and they slip, slide, bounce and explode! Simply fill a cup or bowl with water and add Slippery Spheres. In less than one day, Slippery Spheres will expand to over 200 times their size as they grow to the size of a marble! Slippery Spheres are completely reusable, safe for ages 4 and up, non-toxic, and environmentally friendly.