I wear street size 9, ordered 9.5, but tried them on still too small. I should have followed the reviews to order 1 whole size up. But I love the comfortable fit, the flexibility of the split arch and great shock absorbing sole. I'm looking forward to receiving my size 10 in exchange.  I'm getting better Zumba (love it!) but my old gym shoes restrict my movement. I need a good professional dance shoe. These shoes are very promising. Can't wait to wear them to Zumba class!