It's January and my feet are cold. I reached for the felted slippers that I made last year.
I really did not believe that I could felt these slippers to fit, but it worked. What's even dumber is that (of course) I was so impulsive that I couldn't wait to felt the first one before making the 2nd one, so they were felted at different times (I don't recommend that, though; I will try to restrain myself if I do another pair). I did short cycles in the washer with warm water to get them right.
I knit them from this book:
It is out of print but Amazon has used copies PLUS Arne and Carlos have a pattern at their website
https://shop.arnecarlos.com/product/basic-pattern-for-slippers-copy/
PLUS there are youtube videos.
I'm sure that if I lived in Norway I would wear these most of the year. Be sure to watch some video of theirs to see Arne knitting. So fast!