Superior Filtration, Maximum Versatility Ideal for backcountry trekking with family and friends or keeping on hand for emergencies, Sawyer's Single Bladder Gravity Water Filtration System provides an easy-to-use, portable, and high-flow gravity-based water filtration system that's great for filtering large quantities of water. It comes with a Dual-Threaded MINI 0.1 micron water filter, which enables you to directly fill water bottles, soda bottles, hydration packs, and more. Removes 99.99999%* of all bacteria, such as salmonella, cholera, and E.coli Removes 99.9999%* of all protozoa, such as giardia and cryptosporidium Removes 100% of microplastics Filter rated up to 100,000 gallons Includes: Dual Threaded Mini Filter 1 Gallon Water Bladder Hanging Strap with S-Binder Cleaning Plunger Hose Guide Cleaning Coupling Gravity Hose