The Sawyer Bottle Water Filtration system is a 24 ounce bottle that allows you to drink water safely from freshwater lakes, streams, and rivers. This is great bottle to use while many outdoors activtites such as hiking, camping, and you can even use it while traveling anywhere in the world. It includes Sawyer's high performance 0.1 micron absolute hollow fiber membrane filter which removes 99.99999% of bacteria (including E.coli, Salmonella), 99.9999% of parasites (including Giardia and Cryptosporidium), and 100% of microplastics, dirt, sand and cloudiness. The cleanable and reusable filter lasts up to 100,000 gallons of water. This water bottle is durable and BPA-free. . The kit includes a 24 oz BPA free Tritan bottle, cap, that fits standard wide mouth bottles, the dual threaded Mini Filter, and a backwash syringe. Shop at Sawyer's Country Edge.