Gelbee Yellow Gel BBs - 20000 Rounds - Gelbee eco-friendly, non-toxic, non-staining, non-irritating gel BBs require zero clean up and only sting enough to let you know you've been tagged. The self-standing, resealable bag contains 20,000 gel BBs made of Super Absorbent Polymer (SAP). Just add water to expand to 10x size. 20,000 Super Absorbent Polymer (SAP) gel BBs Just add water to expand to 10x size Gel BBs are eco-friendly, non-toxic, non-staining and non-irritating Self-standing, resealable bag reduces packaging waste