Quench your thirst with one of the lightest and most versatile filtration systems on the market! The Sawyer Squeeze Water Filter Filtration System filters out 99.99999% of all bacteria, such as salmonella, cholera, and E. coli, thanks to the hollow-fiber membrane filter. Plus, it removes 99.9999% of all protozoa, including giardia and cryptosporidia. It's incredibly easy to use and small enough to take virtually anywhere! Just fill up one of the included 32-oz. reusable pouches, screw on the filter, squeeze the bag, and drink directly from the push-pull cap. It can also attach to most threaded water bottles, including 2-liter bottles. Squeeze filter fills most water bottles in as little as 30 seconds. Includes two 32-oz. pouches, a replaceable pop-up drinking spout, a cleaning syringe, inline adapters for hydration packs, gravity tubing for gravity filters, and a mesh carry case. Note: Do not freeze.Manufacturer model #: SP129. Incredibly light, small, and versatile Hollow-fiber membrane filters 99.99999% of bacteria and 99.9999% of protozoa Easy to use Attaches to included 32-oz. reusable pouch or most threaded water bottles Squeeze filter fills water bottles in as little as 30 seconds Includes two 32-oz. pouches, replaceable drinking spout, cleaning syringe, and carry case Also includes adapters for hydration packs and tubing for gravity filters