My husband really likes the look of these sandals and they are to replace a very similar pair of reefs that broke after about a year and a half.  He wore these for about 5 hours and had blisters.  The foot strap is snug.  His feet are bigger than mind and if I slip my foot into them the straps hug my women's size 8 foot rather well.  So bottom line is we hope the strap stretches out.  We've never had this issue with any of his other reefs for over a decade.