I ordered this show two times.  One time in the size I normally buy in this brand (too big) and the second time in a size smaller (still didn't fit).  The strap going over the velcro needs to be a little longer, the piece that they sew on is too short and allows your foot to slip... I tried to do it as tight as I could but when I stepped the velcro came undone.  My foot kept slipping in the heel area as well (I walked around on our carpet to test out).  Cute shoe though, wish it worked out =(