CAPABLE OF FILTERING NON-DRINKABLE WATER: this water bottle contains a filter with technology developed by NASA, capable of eliminating over 99.99% of tap water contaminants, thus being able to convert non-drinkable water into drinkable water. With the BottlePro thermal filter bottle, you can have ready-to-drink water wherever you are, making it an excellent choice as a sports bottle or your perfect ally on your travels or excursions.