I purchased these to replace my earth sandals that I loved.....initially the fit was tight...the straps were pretty tight but in a few days they loosened up the sandals felt pretty good. Comfortable and well cushioned. I thought I had found my replacement shoe.  However, after having the sandals only a week, the straps have gone the other direction to being completely loose and sloppy. Now the sandals barely stay on my feet as I walk after just a week!!!! This does not make me happy as I now have to concentrate to keep the sandals on and I'm very fearful of falling and twisting my ankle or worse.  I'm gonna see if they can be returned.