How to I love these?  I just bought the 4th pair so that I can keep these slippers in my Florida house.  Yes, even though these are wool, they are still perfect in houses with air conditioning as well as being ideal for winter use.  The arch support is better than average.  The sole leaves no treadmarks on the floor as do other Giesweins, and there is no center seam that can annoy.  The slipper is still roomy enough for me to use them with my orthotics.  Why not 5 stars?  The size 37 that I normally wear is a tad too small as it allows my heel to come onto the back edge.  The size 38 is just a tad larger than I would like.  Still, it works well with regular socks and even better with heavier ones.