I love these slippers. They're so comfortable, and the sole is sturdy. WIth heavy wear outside, I imagine it would wear out, but it feels pretty substantial to me. The sizing can be tricky, though. I bought mine in a store, so I was able to try on different sizes. I usually wear an 8.5 to 9 depending on the shoe, so I tried on an 8 first (they only come in whole sizes) because I heard they run big. It was very snug, and if they had stretched it probably would have been okay, but my toes felt very crammed in. I tried on a 9, and they're a little loose, but I find them more comfortable. The bow on the front comes undone easily, but it can be retied no problem. All in all, if you get the right size, these are perfect slippers.