My husband helped me look online for several sandals, this sandal and another pair I purchased from Gold Pigeon Shoes were perfect.  The site said if you wear half sizes to go to the bigger size (which I did) and I felt they were a little big, so I purchased the smaller size (my regular size) and they fit perfectly.  I have plantar fasciatis (?) and am overweight, so I needed a sandal with arch support.  They feel really comfortable.  What I especially love about the sandals is the magnetic straps.  I have a belly and it's hard to bend over to deal with straps.  Just need to pull the strap off, slide my foot in and put the strap back.  No adjusting necessary, but there's velcro in case you do.  Gold Pigeon was wonderful about returning/exchanging the larger sandal for my regular size.  Oh, and I purchased two of them.