Understand I am nobodys audiophile. I ordered these for the gym because I like the idea of having blue tooth headphones without having to pay over $100 for something like Beats. Dont know why they didnt think of this before. I am a UK size 16 (33. I gave 4 stars only b/c of the size issue and I had to add some moleskin to prevent rubbing on my toes. The zipper in the back is a little stiff on both booties. The cover under it has not warped, dented or been damaged at all. I love that I can wear these around the house and outside and not have to worry about getting them ruined because of a fabric bottom. Returning them! 5 , because i like the extra room in my shoes.