I received my shoes yesterday and wore them to ballroom class today. The brand suggested to go a half size up from your street shoes, and since I am between a 9.5 and 10, I decided to take chance and go for the 10. When I buy my second my in a different color, I'll be going 10.5. They were mostly cramped in the toe, but after two hours dancing in them my toes didn't hurt much worse than when I first put them on. I expect after a few lessons and a chance to break them in, they'll start to feel better. As for their purpose, I had no problems dancing in them: they were smooth enough to let me spin without issue and gave me traction so I wasn't spinning out of control. First impressions, I am pleased with them, but time will tell how they hold up.