I have three base camp filters for sale. Buy one or buy all three. All three units are NEW. I accept payment through Goggle Checkout and PayPal. Price includes shipping cost. Product will ship via UPS Ground or USPS Box Flat rate. Picture of filter is attached. Gravity, the physical law and culprit behind heavy packs and tired shoulders, has never been a backpacker's friend. Katadyn has now shown us that gravity isn't all that bad. The Katadyn Base Camp filter uses nature's force to microfilter water anywhere. Simply fill up the included 2.6-gallon bag and hang it from a tree. Gravity will take care of the rest. No pumping involved, leaving hands free to set up camp, lead a route or apply Icy Hot to those shoulders. The Base Camp is a member of Katadyn's exclusive BackCountry Series.The Base Camp's cleanable Hiker PRO cartridge removes Bacteria, Giardia and Cryptosporidium to EPA standards and the Activated Carbon Core reduces unpleasant tastes and odors from the water. Specifications: - Weight: 13oz - Height: 6" - Purifier: No - Filter Construction: AntiClog Technology 129 square inches of pleated 0.3 micron glassfiber media. Activated Carbon Core. - Gravity Flow: Yes, primary feature - Recommended Use: Camping, base-camp, scouting - Field Maintainable: Yes - Flow Rate: Up to 0.5 liters per minute - Cartridge Capacity: up to 200 gallons, depending on water quality - use of filter protector will extend cartridge life. - 48" Outlet hose Shipping Dimensions Weight: 1.1 pounds. Dimensional Weight: 1.11 pounds. Dimensions: 2.75" (W) x 8.75" (H) x 7.75" (D) Weight Disclaimer: * Weight may vary based on configuration.