These are my wife's favorite slippers. They feel weird a first inside on the sole, but you just have to break them in and they flatten out just right inside. My wife loves the "lip" on the back of the heel that keeps them on, and she loves that the most, as she doesn't like slip ons. She has never had a problem with them falling apart. She washes them in the delicate cycle or hand washes them and lets them air dry. They always hold up if you take care of them. She does like to replace them every couple of years because she wears them so much being homebound. But they hold up well for years. She sizes up a bit as they run a little smaller. She wears a 9.5 size shoe so she orders the 10/11 size slipper and it is perfect.