My girlfriend suggested these as a replacement for some very old moccasins. I was amused by the style and found them quite comfortable; they're spacious, but remain snug and warm around the toes.
However, within a month significant holes had worn right through the (deceptively tough-looking) soles of both slippers.
I do work from home, so these have had quite a bit of wear in that month. However, I'm still disappointed that they began falling apart so soon - especially as the aforementioned moccasins had lasted for well over three years at the same level of use!