I've tried the shoe in the sauna and am pleasantly surprised by the non-slip sole. With my old slippers I am partially slipped on the wet floor (tiles and wooden planks). A test in a sports / climbing center has shown that he slipped on the smooth floor. Here you need probably a softer rubber sole, but that's usually not the main field of a Badeschuh :-)
The straps / belts are inside of a foam-like consistency, which they record something Feuchtgkeit in the sauna / pool. For me, but are also quite quickly dried.
The processing makes a good, robust impression and gives hope that the shoes might consider a couple of years.
