Those in the picture are also common in Germany and the Netherlands.
Here in Europe we use roller shutters in front of windows or doors for this. Works great, but the house gets really dark inside. A quick google search tells me this might be limited to Germany and bordering countries though.
Perfectly preserved? All that’s left is is the skin which has turned into leather due to the acidic environment in the bog.
So I googled him, and in photo’s he looks like the Dutch stereotype, or even a cliché, for a German.
I’d say someone obese wouldn’t have these “rolls”. Source: I am fat.