Because it rolls up to occupy virtually no space in your backpack and has a total weight of 3 oz., the Sawyer Squeeze Water Filter satisfes your water needs and tucks neatly away at all other times. It comes with three pouches 64 oz., 32 oz. and 16 oz. Simply fill up a bag, screw on the filter, and squeeze water into your bottle or directly into your mouth. Filter has a built-in push-pull cap for easy water distribution and can also be attached to most threaded water bottles. Includes a replaceable pop-up drinking spout and cleaning syringe. Manufacturer guarantees a one million gallon life on the filter. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Filters.