I wish I would have paid better attention to the reviewer who said these slippers were too wide.  I thought the velcro would help with that, but it did not.  Tightening it just made it hurt across the top of my foot. In the beginning they seemed find and I loved the arch support, but after wearing them for several days they stretched too much and now my foot just "sloshes" around inside.  It worries me that I might turn my ankle so I have quit wearing them. It's really too bad because the support was so awesome at first.