Age does matter as our feet change as we get older. They tend to widen and get flatter with less cushioning on the bottoms of the feet. A good rule of thumb to remember is slightly larger volume tan needed can be dealt with. Slightly less volume then needed cannot. I would look for a shoe that allowed my whole foot to be supported with no part of the foot spilling over the last. Also, look for a last that has a little give to it.