The Hiker is America's best selling water microfilter. Its unique Anti-Clog filter requires no cleaning. Compact and lightweight (only 11 oz ), the Hiker is perfect for backpacking and camping. Chosen "Best of the bunch" by Backpacker magazine field testers. Eliminates bacteria and Protozoa (Giardia & Crypto). Carbon core reduces pesticides and chemicals, producing fresh tasting water. Ergonomic handle makes it easy to pump 1 liter per minute. Size 6-1/2 in x 2-3/8 in.