Slippery, Gooey Growable Fun
Fascinating science fun and a wonderful introduction to the world of polymers, Spiderballs are small multicolored balls that grow up to 100 times their orignial size when placed in water. In a matter of hours, you'll have large squishy balls to roll, throw, bounce, slip, slide, explode, and experiment. You control the range of sizes, by controlling how much water you add to each. Spiderballs are reusable for fun that never ends.
Each package contains 15 grams of Spiderballs, averaging 40 pieces per pack. Spiderballs vary in size and color.
WARNING: Choking Hazard: Includes small parts. Not suitable for children under 3 years.