Whether you're exploring a winding trail or fishing an inlet's solitary shoreline, the Katadyn BeFree AC Filter Collapsible Water Bottle gives outdoor enthusiasts access to clean, great-tasting water wherever they go. This 1L water filtration flask combines 0.1-micron Hollow Fiber Technology with an Activated Carbon Core for 2-stage filtration that improves taste, removes unwanted flavors, and reduces odors. Lightweight and collapsible, it features a flow rate of up to 2L per minute, a BeFree EZ Clean Membrane that requires no additional tools, an integrated rugged handle, and a robust flip cap. Tested to 1,000L, depending on water quality. Manufacturer model #: 8021402. 1L water bottle filters water on the go Flow rate up to 2L per minute 0.1-micron Hollow Fiber Technology Activated Carbon Core BeFree EZ Clean Membrane Filters up to 1,000L of water