I bought these shoes for Zumba's. Based on other comments I bought my shoes in size 41 1/3, normal, I have 40.5 and they fit perfectly. The shoes are comfortable and super light. Real peak for Zumba. BUT: after the Zumba-hour, I've noticed that these shoes extremely rub and leave thick black strips on the hall floor. I'm really disappointed because I assumed that these are suitable hall. I now have another shoe bought by another company does not rub off according to the description. And the shipping cost of 10 I find pretty intense. I would advise against the purchase and instead put a few euros on it and buy another model (also available at Amazon).