I choose to wear a size 8 shoe although I can fit well in a 7. I thought I was fine buying the M 8-9. The shoe won't even go on my foot! Of course I wanted a larger size. I contacted the Discount Dance Supply and told them of my situation. They wanted me to ship them back, my cost, and re-order another size, again with me paying a shipping charge. I sold the shoes to a fellow dancer and am done with the company. Be aware that the shoes run VERY small.