Using this soft flask is a breeze. First, find a natural water source like a stream or a lake. Unscrew the wide 42 - mm cap and dip the flask into the water. The XA filter will do its job of getting rid of bacteria and protozoa as you fill it up. Then, screw the cap back on and take a drink whenever you're thirsty. Remember, this flask is designed for natural water sources, so don't use it with dirty or polluted water that might damage the filter. After each use, rinse the flask thoroughly with clean water. To keep it in top shape, let it dry completely before storing it. This will prevent the growth of mold and ensure the filter lasts a long time.
