These slippers are about the only reason that I don't want winter to end. I bought them because my old slippers were coming apart. When I started shopping, I couldn't believe how much a good pair of slippers could cost. I refused to pay $65 for something that only close friends and family would see. When I spotted these, I thought that the price was right and they looked warm. While they are not the most stylish looking things in the world, they may be the most comfortable. The bottom has foam that seems like it is made out of Tempurpedic material. It is dense memory form that conforms to the bottom of your foot. It packs down after you wear them for a few seconds, but every time you put them on, the foam has gone back to its fully expanded state. This makes it so that when you first put them on, it's like walking on little pillows. Then, they become like little heated blankets under your feet. It's magic! Just don't wear them to a beauty contest -- you'll lose.