The Katadyn Hiker is a lightweight 11oz pump-action water filter and microfilter built for backpacking, hiking, camping, and trekking. The microfilter filters sediment and fine particles from your wilderness water sources, transforming streams, ponds, lakes, and questionable backcountry sources into drinkable water. Pump-action pressure delivers consistent flow with no batteries, no electricity, and no chemicals. User-friendly operation makes the Hiker easy for anyone in the group to run, regardless of experience. Field-cleanable maintenance: clean in the field without returning to camp or a workbench. Backpacker Magazine approved for long-distance backpacking trips. The lighter alternative to the Hiker Pro, without the activated carbon stage. Trusted by Katadyn since 1928.