The WaterBasics Bag to Bag Filter Kit lets you utilize the power of gravity to purify water anytime, anywhere. Small enough to fit into a go-bag or automobile emergency kit, this system quickly filters water from one bag to another-without pumping! Great for any emergency because everything is included in an easy to store and transport kit. The water bags lay flat and can be rolled up and storred conveniently in the storage pouch, and stand up and pour easily when filled. The Bag to Bag Filter Kit can be a convenient source of potable water while camping, fishing, hunting, or boating. Includes the GRN LINE filter specifically designed to provide Biological Protection when using a natural water source. The filter removes Cryptosporidium, Giardia, and bacteria, reduces chlorine and other chemicals, and improves the taste, odor, and clarity of drinking water. Filter made in the USA.