First let me say that I LOVE these slippers.  They have the BEST arch support by far for any other slippers I have tried.  And I have tried a LOT of them!!!  I have been dealing with plantar fasciitis (which is now mostly healed), and these feel great and relieve the majority of the pressure on my heels.  I wear them pretty much all day long because I can't go barefoot, and I don't know how I could live without these.  They have been a godsend since I have to wear something with support with our hard wood floors.  However, after a month or so of constant wearing they have stretched out and are very loose.  If you can order a smaller size, they would probably fit better over time.