I could barely walk a few steps in these shoes and will be returning them.  There is a large gap at the back of the heel, and the straps around the ankle are too high and dig into my ankle.  The toe box area fits well and seems like it would be comfortable, but the straps at the top of the shoe are stiff, dig in, and gap.  Overall a bad design.  The bottom of the shoe is good, but the top doesn't fit well at all.