So far as being used to keep a "basic shoe shape", these XL shoe trees were able to fit in a size 11. Great slippers, best price I could find too! I am understood clearly with the microphone that is attached. I had some a few years ago that I could wear without socks and were very comfortable, when they wore out I could not find any so great. It comes with some blank black labels and a white marker but I suggest using a reliable white marker that wont smudge on sticker paper. They had decent reviews and reported good sound so thats what I decided to try. They are soft & squishy inside but not so soft that they arent supportive. Dre or other bass heavy products, the bass from these speakers is just right, its short, punching yet still deep. Pros: Comfy squishy sole, good traction. I got these for my husband after getting him the Skechers golf shoes, that he loves.