I have for two decades been dedicated to one of the "boiled wool" slippers that is soooooooooooo comfortable... last time I got a pair with indoor/outdoor soles instead of the wool with non-skid dots. Still like those slippers, BUT the lifespan of the latest pair disappointed so I decided to try "real leather" uppers with an indoor/outdoor sole and bought these Sorel slippers. I had read several of the Amazon reviews so I was not alarmed when they were SNUG on arrival... I've worn them about a month and they have "adjusted" to my feet nicely. VERY COMFORTABLE... repeat COMFORT seems EQUAL to my expectations...  but a bit warmer than boiled wools... good for winter months but maybe too warm for Southern summers. Might be time to have Sorels for winter and a lighter type for the rest of the year. A final tip... it the idea of fleece-lined SNUG slippers that seem very true to exact size would bother because "loose slippers" that feet can roam in is preferred, I would suggest ordering the next size larger than exact shoe size. That should work out well because initial fit would seem "OK" and loosen some during that first month.