A genuine CO2-neutral and energy-saving solution!! 1. Fill the bag with water. 2. Place it in the sun. 3. Hang it up - and whoops! a bathroom!! An simple, neat and easy solution when the need arises. The bag contains 10 quarts of water and when folded takes no space in your luggage. It has a solid handle and flexible tubing. Remember to make sure the water does not get too hot.