Whether hiking, camping, hunting, fishing, or traveling abroad, the Sawyer PointOne Squeeze Water Filter will ensure you have access to clean water in the backcountry or anywhere in the world. The PointOne Squeeze Water Filter is available as a Personal System with one to three included water pouches, or as an All-in-One System that includes a water pouch plus field maintainable bucket and faucet adapters that enable you to create a high-flow water filtration system for a group of people anywhere in the world. The Personal System comes in three options –model SP129 with one 32-ounce, BPA-free water pouch; model SP131 with 16-, 32- and 64-ounce pouch sizes; and model SP137 with one 32-ounce pouch plus straw and inline adapters for hydration pack bladders (sold separately). Ideal for emergency preparedness, the All-in-One System (model SP181) comes with a 32-ounce pouch as well as adapters that enable you to attach the filter to a 5-gallon bucket (sold separately) for high-volume potable water or attach it to your house faucet. The SP181 can create clean, filtered water for a group that can yield up to 540 gallons of clean water per day from any fresh water source. The PointOne filter removes greater than 99.9999 percent of all bacteria and greater than 99.999 percent of all protozoa (Independent Testing Laboratory Hydreion, LLC.; Microbiological Report S05-03). The Sawyer PointOne 0.10 Absolute Micron Water Filter is backed by a manufacturer’s limited lifetime warranty.