I'm in my late 50's and have not worn sandals since I was a kid.  However, my son-in-law has a pair of these and recently let me try them on while visiting.  I was instantly hooked and ordered mine right away in time for a Florida beach vacation.  They were sent from the vendor in less time than promised and I have been wearing them constantly since then.  They are comfortable and well-made as Sperry boat shoes.  (I've been through several pairs of those over the last 35 years and love them.)  They do not slip off your feet while walking and do not irritate between the toes.  I recommend these even if you don't usually wear sandals, but are looking for some casual attire for the hot weather.