P.O.D is a water bottle that is for the traveller that may not necessarily have access to filtered tap water. The intention of this design is to purify water on demand through the small capsules on the side. These are filled with a small amount of chlorine so when they are squeezed, they release into the water and purify it over a period of time. The patterned form on the side enhances the water flow into the bottle to the chlorine mixes evenly. The bottle is double ended so the unfiltered water is put in one end, and the user drinks out of the other to reduce possible contamination.