WaterBasics Bag-to-Bag Water Filtration Kit WaterBasics Bag-To-Bag Water Filtration Kit comes with everything you need to produce clean safe drinking water wherever you are. The kit includes two Water Basics Collapsible Bags, one for collecting "unfiltered" water and the other for receiving and storing "filtered" water. Simply fill the "unfiltered" bag with water from a natural, municipal or stored water source, connect the tubing with the GRN Line filter directly to the threaded opening of the "filtered" bag. Aquamira's GRN LINE filter removes bacteria, cryptosporidium, and giardia; reduces chlorine and chemicals; improves taste, odor, and water clarity. Filters up to 80 gallons. Replacement filters sold separately.