I ordered one half size up as suggested, they were a little big in the back, but once your feet swell from dancing, isn't that what you want? I took these puppies literally straight out of the box right up on stage for a 3 hour dance rehearsal. I could not have been happier with how they held up without being properly broken in. The most ingenious part of these is actually the little notch taken out of the back of the shoe that would usually hit your heel. Why every shoe in the world hasn't done this yet is beyond me because it eliminates the rubbing and bleeding and blistering of the heel which is so common in too stiff shoes. At the end of the night my feet were a little sore, but NOTHING compared to what I was expecting, they're actually rather comfortable. The fuzzy coating on the inside of the shoes will make your feet sweat a little so just be aware of that. I love how low the heel is on this so no teetering issues. Buy these!!!