Weighing just 5.5 ounces, the durable, Sawyer Water Bottle delivers fresh, clean water as fast as you can drink it. Great for everyday hydration, camping, or taking on trips, simply fill the 34-ounce water bottle from a river, lake, or faucet and start drinking from the included straw. The Inline Filter model can be detached and used on a hydration pack, a pre-filter for an existing pump system, with the provided faucet adapter, or with a gravity bag. FeaturesRemoves bacteria, protozoa, E. Coli, giardia, vibrio cholera, Salmonella typhi, and micro-plasticsBPA free bottle2 replacement drinking straws includedSawyer 0.1 Micron Absolute Hollow Fiber Membrane Filter included