I'm very impressed with these sandals and the company.  They are much thinner and lighter than my old sandals, but the material at the bottom is very soft and seems to give good arch support.  The strap material feels very soft and comfortable, but after a while it did become irritating around my ankle the first time I wore them.  I think this will go away after I break them in a bit/become used to them.  I probably need a half size smaller, but I don't think they were sold in half sizes.  This is probably causing some of the rubbing on my ankles, but overall, I am very happy with them.