I wear athletic shoes for part of every day and all of some.  My foot is a 10AAAA, but I now have orthotics to provide the cushioning my feet lack and those allow me to wear a AA.  This is one of two styles I've tried with the orthotics that requires me to go up half a size.  Some don't, but I do not know if that means that these run slightly small or if it means that the shape of the shoe is just that much different from my orthotic to require the larger size.  It's lighter than the 810 series, which is not necessarily bad, but it doesn't feel as sturdy, either.  It's not as comfortable for exercise as the 860V series that my foot doctor's fit specialist recommended for me, but I just can't wear wildly colored shoes -- or shoes with an open mesh toe box -- for everyday activities.  For serious walking, I'd prefer a sturdier shoe.  And it fits better than the horrid 812NB.