The LifeStraw Water Bottle with Filter holds 22 ounces of water and is a must for anyone that likes to be outdoors. It removes 99.999999% of bacteria (including E.coli, Salmonella), 99.999% of parasites (including Giardia and Cryptosporidium), and 99.999% of microplastics, dirt, sand and cloudiness. It reduces organic chemical matter, chlorine and bad odors for better tasting water. The membrane microfilter lasts up to 1,000 gallons (4,000 L) of water and the carbon filter will last up to 26 gallons of water. This water bottle is durable and BPA-free. Your purchase impacts one child having safe water for one year. Shop at Sawyer's Country Edge.