Act now! For a limited time, this item will ship for free if you select ground shipping.These incredible pebble-sized polymer crystals mysteriously turn into pieces of gel-like goo when you add water. These crystals absorb 150-300 times their volume in water, and they're reusable. The instructions are packed with intriguing activities that make great hands-on activities or science projects for students.
 | Includes Measuring Scoop |
| Superabsorbent Crystals |
| Instructions |
