Take pressurized water wherever you need it with the WaterPORT 4.0 Gallon Water Tank, formerly known as the Day Tank. 4.0 gallons of water available to you wherever you need to clean, rinse, refresh, or just water something down. Add pressure as you fill it with a standard garden hose, or use the optional Pump Cap to pump it up while on the road. You can even connect a bike pump, or air compressor to the included Schraeder valve to add up to 40psi.