I hope my review can prevent others from making the same mistake as me. I read tons of reviews before buying these shoes, but I was extremely confused about which size I needed. I only buy NB sneakers, and I've always been a 9.5. But NB's size indicator told me I needed a 10.5 in these (WHAT?), and many reviewers said to size up.

So I ordered two pairs - a 9.5 and a 10. I tried them both on, and the 9.5 was quite snug, while the 10 felt pretty good. So I decided to keep the 10.

Wrong choice! I wore them to two Zumba classes and my feet were sliding around in the shoes. I could have hurt myself.

I hadn't returned the 9.5s, so I decided to give them a try. Wore them to Tae Bo and to Zumba, and they are perfect. The shoes stretch as you do the steps, so you want them to start off a little tight.

I'm bummed that I now own an extra pair that is too big, but I'm glad I found a pair that fits! I will definitely buy these again!