I got my first pair of theses shoes at a running store the clued me into the need for a stability shoe like this for flat feet like mine and to get them in a size bigger than I was wearing.  Ugh, now I'm up to 11!  Everything is getting bigger as I age.  But these are great shoes.  They do tend to lose their support after about 6 months of walking but that's about right, mileage-wise.  Time to order another pair.