i got these for Christmas 10 years ago and they’re still my go to for wearing around the house. They’re very soft and lined in a way that they keep my feet warm but not sweaty.
I love my Sheep by the Sea wool slippers. They are so cozy but have held up quite well. I got mine in Ireland but they can be found in various online shops.
If you really want to go sturdy, I’d rec a lined Crocs slide.
Unparalleled warmth and comfort. My wife got me these for Christmas, and they're great for keeping your feet from freezing in a drafty house and for sneaking quietly to the kitchen for late night snacks.