I bought my pair of Acorn Men's Sheepskin Slippers at a store where I could try them on before purchasing them. They were warm and snuggly. However, after I had worn them for a few days I noticed that they no longer provided enough support to keep my heels on top of the soles. Instead, when I walked around the house, my heels would slide off the soles and would push down on the side of the slipper. Soon there was a scuff mark on side of the slippers near the back (right next to where the little oval metal Acorn insignia is located). Before long a hole had developed, and I stopped wearing the slippers. I could see this happening (perhaps) if I was an extremely heavy person (which I'm not) or if these were a $20 pair of slippers. Given what they cost I was extremely disappointed. Thankfully, my daughter bought me a pair of UGG's for Christmas a little over a year ago. I've worn them ever since, and they're holding up really well. (In looking at some of the other reviews prior to writing mine I've noticed that the problem I've cited is a common complaint.)