I had my previous pair for 3 years and wore them constantly. They finally needed replacement (though I will still wear the old pair in the basement and back yard). Frankly, I don't know what all the criticism is about. These are the best sheepskin slippers I have ever had, and I've had several other brands.  Most of the others I don't like because they are clogs rather than slippers.  That is, they have a sort of unbendable sole, which causes me to catch my foot on our carpeting and trip. These are very different. The soles are more of a traditional slipper. They are SO comfortable, too.  Yes, the fur packs down after a while. That's the nature of the product. They also loosen up a bit. Same thing has happened in my Uggs boots.  But the Acorn slippers still feel great and fit well for (in my case) a few years. My only complaint about these is they only come in one color. I wish I could buy a few more shades. Finally, this price is great. I paid a lot more for my first pair.