After wearing my old pair of Sorel slippers down to threads over 10 years, it was time to replace them, so naturally I looked to Sorel again. These leather slippers appear to be even sturdier than the old felt ones, so I imagine they will last for at least 10 years. My only rather minor gripe is there is a bit of a lip to the back of the slipper - not low enough to ignore, but not high enough to keep the slipper holding firm to the heal as I walk. I can't really wear socks with these yet, but I imagine as the fleece compacts over time (as they always do), that issue will resolve itself.