Hollow fiber membrane filter offers four ways to produce clean drinking water while on the go: 1) use the filter with the included water bottle to treat water as you sip; 2) use it as an inline filter for a hydration reservoir, household faucet, or homemade ultra-light system; 3) use it to make your own gravity filtration system; or 4) use it as a pre-filter for your pump filter. • Removes particles, protozoa, and bacteria down to 0.1 micron in size, including Giardia, salmonella, and cryptosporidium Polyethylene bottle is 100% BPA free Flow rate: as fast as you can drink Capacity: 34 oz. / Weight: 5.5 oz. / Dimensions: 3” x 11 1/4” Includes 34 fl. oz. bottle with cap, filter, replacement straws, hydration pack assembly kit and instructions.