Soft, packable 1 liter bottle that is collapsible and flexible to pack small, yet sturdy enough to stand when full. The perfect on-the-go hydration companion. The 0.1 micron absolute hollow-fiber membrane filter removes 99.99999% of bacteria (such as salmonella, cholera, and E. coli), 99.9999% of protozoa (like giardia and cryptosporidium), and 100% of microplastics for clean, safe drinking water. Paired with a 1-liter collapsible, BPA-free, FDA-approved TPU bottle that packs small yet stands upright when full, this system is lightweight and easy to use. The Sawyer Squeeze Filter is reusable, lasting up to 100,000 gallons, with thick fiber walls for strong backwashing. Weighing under 5 ounces, it includes a cleaning coupling and plunger. Triple-tested during manufacturing, each purchase of a Sawyer product supports clean water initiatives around the world.Kit IncludesA Sawyer SqueezeCnoc Premium 1 Liter Bottle