Approx 5foot x 9foot paddling pool (CW2)

Works perfectly with top two-thirds of pool inflated. The bottom third also inflates fine but slowly deflates over a few hours so either use like we mostly have with two inflated chambers, just meaning it a little more shallow or you can use all chambers inflated and have to top up every few hours.

Photos show inflated with both two or three chambers (as you can see, still a decent pool with two chambers).

Photos show shadow from tree branches, that is not dirt :-)