The Katadyn Hiker Pro Transparent is a portable hand pump water filter built for camping, backpacking, hiking, survival, and emergency preparedness. The lightweight 11.2 oz microfilter pumps 1 liter of clean water per minute and connects directly to most water bottles and hydration packs. The transparent body gives you a clear view of the cartridge so you always know when to clean or replace it - no guesswork on the trail, no unexpected slowdowns when you need water most. The 0.2-micron glass fiber cartridge filters up to 1,150 liters; activated carbon granules improve taste; a filter protector extends cartridge life; and a pre-filter on the intake hose protects the cartridge from debris.