Weve partnered with leaders in hydration and filtration technology to bring you the worlds first packable hydration pack. Designed specifically for travel and adventure, the built-in filtration system gives you access to clean drinking water, anywhere in the world. Feel at ease drinking from rivers, lakes, and international taps with the in-line assembled Sawyer MINI water filter. Filter bypass for non-filtration functionality of the Hydrapak water reservoir also included. Best of all, the entire backpack packs up to the size of a water bottle for ultimate transportability.