This is my second pair of these slippers. I specifically ordered them because my first pair (bought at a sporting goods store) were super comfortable.  I work from home and in colder months wear these 8-10 or more hours a day.
I was disappointed in the "new" ones.  I don't understand why manufacturer's change the construction. The new pair is far less comfortable--the older ones had a lot of "cush"--thicker more supportive insoles and  just more comfortable all the way around. The lining is not as generous either.  The first pair was a bit snug at first as the lining was thicker and more substantial, they were actually a bit snug until the lining compacted a bit. The new pair not so. I am keeping them, but will not order again as I don't believe the current ones are worth the price.