I am a size 6.5/7 normally...however I also have rather narrow feet. I ordered the medium shoe and it fit alright but not quite tight enough so if I were to dance continuously in them they might have started to slip. I actually sewed these on either side of the elastic band to make them tighter around my feet. The construction is pretty durable and they feel like nothing is on my foot when I dance. They are great for turning. I really love these so I will probably just order a size down next time.
I am a size 6.5 and ordered medium. They are exactly what I was looking for. They felt super comfortable on and the padding is exactly the amount I am looking for. These are great and. I will order them again as needed.