I just received these two days ago and I've been wearing them ever since I opened the box, trying to break them in, with socks on.  I usually wear a 7.5 in all closed shoes, so that is what I ordered.  I'm glad I didn't size up, because these fit true to size.  True that they felt snug at first, and my heel did slip in and out.  But now, as I've been wearing them, the puffy fuzzy lining is molding to my foot and it's feeling better.  These shoes might run a bit narrow, the sides of my feet are stretching it though, I do not have wide feet.  I thought these might be leather but the tag says " all man made materials."  The picture appeared to be a reddish brown leather look, but in person they are darker brown, matte nubuck material.  They are cuter in the picture than in person, but I will be keeping them anyway.  I got them on sale and they are a good at-home, or run to the store winter shoe.  I would not have paid full price for these, they are almost slipper-like in appearance.  I would wear these to the grocery store, but not out to dinner.