Washed I have not you, but at a similar Wollmütze I did that once (Machine wash at 40 degrees) and then the shape and the material was quite labbe rich, although it was a brand-name product.
Most beautiful of extinct MAMMOTH like on the side of the cap.
Will have the cap only for a few weeks, we'll see how the state at normal use one year be.
If I notice something negative I will add it here.
A bit Mies are at Mammut products prices, but the Swiss were already getting some greedy.