The Helio Pressure Shower comes in a small well organized kit, weighs less than a liter of water and provides 5 to 7 minutes of steady and satisfying water pressure. Unlike conventional gravity-fed, hanging shower systems the Heliosystem uses a 11 liter welded fabric water tank pressurized by a foot pump. To use the system, you simply fill up the water tank, let it warm in the sun, set the tank on the ground, then step on the foot pump a few times. Pumping occasionally while showering maintains the water pressure. Helio is ideal for showers, cleaning up gear, or basic field sanitation.