Katadyn Hiker - Water Treatment (Filters & Purifiers): Reviews
This 11-ounce filter's reliability has made it a hugely popular option for nearly a decade. When it does eventually slow down, you just replace the pleated filter component ($30). You also get great volume per stroke; we filled a liter with just 43 pumps. A nifty zippered case includes a slide-lock pouch to isolate the output hose (pristine) from the intake hose (yucky).