WaterPORT Day Tank 4 Gallon - The tank comes complete with Day Tank, spray nozzle and hose, and nozzle mount. When filled with a garden hose using the quick release system, the tank pressurizes in seconds and stores 3.8 gallons of pressurized water for weeks. The tank can be refilled from the large fill cap and pressurized with a hand pump when a hose is not available. The neoprene sleeve (optional upgrade) insulate the potable water and the carrying handle is convenient for moving the Day Tank from the vehicle to the campsite, beach, or wherever it is needed.