7.5 inches high, 11 oz. in weight. Pump and filter casing of durable Lexan polycarbonate. Requires only 1-2 lbs. of pumping force. Delivers water at the fast rate of 1+ litre per minute. Eliminates Giardia and “Crypto” and is 99.9999% effective against waterborne bacteria. 0.2 micron filtration without the use of unpleasant tasting iodine. Up to 200 gallons if regularly cleaned. A Filter Cleaning Brush is included with every Guardian.