Enough water for a shower and generally to get through the day for two people. Be careful how you hang it. I would suggest passing the rope that it has inside through the tube so that it can be hung parallel. If you hang it simply from the middle, it tears easily and cannot be fixed. It lasted me two weeks in free camping. It's worth the money

A simple black bag that can hold enough water for a few showers. It appears sturdy and durable, with the only downside being the somewhat inconvenient "open-close" method for water flow.