The LifeStraw water filter is a compact 8.75L x 1W plastic water filter that lets you drink 264 gallons of pure water directly from streams, puddles, lakes and more. Removes practically all waterborne bacteria and protozoan parasites. Surpasses EPA guidelines for E. coli, giardia, cryptosporidium oocysts and many others. Filters particles of approximately 0.2 microns and larger, reducing turbidity. Contains no chemicals and is safe for your thyroid gland. Has an indefinite shelf life so you never have to worry about it expiring. A portion of all sales go to support clean-water projects worldwide. Imported. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Filters.