Ideal for hiking, camping, hunting, fishing, emergency prep, or traveling abroad, Sawyer's Squeeze Water Filter ensures access to clean water in the backcountry or anywhere in the world. Rated to 0.1 micron absolute filtration, the Squeeze Filter removes 99.99999% of all bacteria such as Salmonella, Cholera, leptospirosis, and e. Coli, and removes 99. 9999% of all protozoa such as Giardia and Cryptosporidium (independent testing laboratory Hydration, LLC.; microbiological report S05-03). The Squeeze Filter also filters out 100% of microplastics. To use, simply fill up the reusable pouch at any fresh water source, screw the filter onto the pouch, and drink directly from the filter or squeeze water into a water bottle. Sawyer individually tests each and every Squeeze Filter three times to performance standards before packaging. The Squeeze Filter comes in a range of models to fit your needs. The SP129 Personal System comes with two 32-ounce, BPA-free water pouches.Sawyer Products has offered the best, most technologically advanced solutions for protection against sun, bugs, water, and injuries - everything from first aid kits developed for wilderness to point-of-use water filters that filter contaminated water to levels cleaner than U. S. bottled water.