Super Expanding Polymer Balls

Super Expanding Polymer Balls Kit. Balls Grow 200 Times Their Size - They Slip, Slide, Bounce, & Glow. These miniature marbles have a lot more to them than meets the eye. Just add water & let the fun begin as the balls expand hundreds of times in size. Kit contains Water Marbles, Spit balls and Glow in the dark Spit balls.

The warmer the water, the faster they grow! Grow a variety of amazing balls - balls that glow, even balls that look like marbles and much more! They slip, slide, bounce, and break! Let them dry out and store them in a sealed bag to easily reuse for hours of ball bouncing fun! Entertaining Kids DIY Kit, Safe & Non Toxic Ingredients.