I am an 8 1/2 M, without fail.  Once I got this shoe the width around my foot was so floppy, I actually turned the shoe over to make sure the wrong shoe wasn't sent to me.  I had to put the buckle on the last hole but any attempt to walk in them made my foot go all over the footbed and I felt like I was going to be constantly sliding off the back of these shoes.  If the band around actually fit where it should I wouldn't have that problem and the lack of a back strap would look pretty cool.