I would have given sandals a higher score if the size was the true size......they're loose.  What helps sandals stay in place is buckling at the ankle.  Funny way to buckle though, the buckle comes completely off!  At first I thought sandals were defective until I got the hang of how to use it.  They are very comfortable though and I am still glad to have purchased them, they look pretty too.  I just wish they weren't as loose as they are.