A water bottle filter for pure water fast & easy. Regardless if in Rom at the Fontana di Trevi, at the cow water basin in the alps, or in a hotel in Bombay. The new Katadyn "Bottle" with a built in water filter makes it all possible. To use, unscrew the cap, fill with water, close the cap & squeeze the bottle to drink. Suitable for clear water, small water volumes & personal use. For more technical information go to: www.katadyn.ch.