The Katadyn Hiker is the best selling microfilter in the US Outdoor Market. Lightweight and easy to use design is the best choice for all around use. Unique, pleated cartridge design provides fast and easy pumping. Convenient and handy for 1-2 people (e.g. while hiking or trekking). Compatible with hydration bladders. Includes: Prefilter, bottle adapter and carry bag Features Filter physically removes particles, protozoa, and bacteria down to 0.2 microns in size, including giardia, salmonella, cryptosporidia and others Glass-fiber element is pleated for increased surface area to handle silt and muddy water Activated-carbon core adsorbs chemicals and pesticides to improve taste of water Aproximately 48 strokes per min. provide 1 liter of clean drinking water Pre-filter at hose inlet filters to 150 microns, removing larger contaminants before they reach the main filter to increase its life span Included adapter allows the filter output hose to attach to the quick-connect fitting built into some hydration reservoirs (reservoir not included) Katadyn Hiker water filter includes a carry sack and bottle adapter that fits most water bottles Technical Specs Best Use- Backpacking Filter Type- Pump Filter Medium- Pleated 0.2 micron glassfiber/carbon core Removes/Destroys- Protozoa and Bacteria Pump Force- 8 pounds Pump Strokes Per Liter- 48 Output- 1 liters per minute Housing Material- ABS plastic BPA Free- Yes Dimensions- 6.5 x 3 x 2.4 inches Weight- 11 ounces