I only wear these in class, not even through the gym parking lot.  So in that regards, they have plenty of support for dancing during Zumba class; previous reviews said they lack support but they are not supposed to be walking shoes.  The only reason I didn't rate 5 stars is I wish they offered other color choices, like grey or white or multi-color.  I have never been a fan of all black athletic/dance shoes.  In terms of sizing, I normally wear a size 6.5 or 7 in street shoes, so I used the drop down menu and ordered the 8 Sansha (7M US Women's/5M US Men's) and it fit perfectly.