Water and gelatin are mixed together to make the paintball’s shell. It is heated and spread out very thin into a half-shell mold. Then, the filling is injected after two half-shells are pressed together. This process is similar to how liquid gel cap medicine is made. The exact ingredient combinations vary depending on thickness of shell desired or even for seasonal grade paintballs. Paintballs are water soluble, biodegradable, and all of the ingredients used to make them are of food grade quality.