Ceramic gravity system with water bag. Simple gravity system is ideal for families and scouts. Siphon filter with 2.6 gallon water bag. 1.2 gal./hour "hands free" output-no pumping required. Output: Approx. 1.2 gal./hour. Cartridge capacity: Up to 5,000 gal. Weight: 27 oz. Height: 8". Hose length: 80". Includes: 2.6 gal. Ortlieb bag, measuring gauge, cleaning pad.