I take a size 6.  This was a 6M.  They looked perfect for work.  The minute I tried them on, they were so tight, the strap was an inch away from the top of the foot.
It did not state that "Velcros" was the attachment of the strap.  I wanted on you could adjust.
From the photo it looked great.
After trying it on, you never saw one take it off so fast. The strap on the photo looks like it gives more space.  Mine was only one inch. I prepared mine and returned it immediately!