The water beads are a hydrated super absorbent polymer.When they strike a target they disintegrate into many pieces and to dust leaving little to no cleanup after use.The ammo can be dehydrated and re-hydrated multiple times or stored in an airtight container once hydrated to prevent dehydration.Action: 7-7.5mmFinish: 20,000 Per BottleSights: PolymerWeight: Bead