By 3 chambers, the hose does not buckle. And the genius is so that you can roll the hose does not have to completely roll, still running through water. Ideal for refilling the Wohnmobiltanks.Mal full length and sometimes only a few feet. Disadvantage: When it is cold (5 degrees plus) is the hose quite stubborn. Nevertheless can be wound well. For stubborn one point deduction. Otherwise 5 points.