This shoe runs narrower than most athletic shoes - a Medium here is same as Narrow in Nike, New Balance, Adidas, and others.  I bought to  wear while bike riding, and the relatively smooth sole is perfect for that.  There is no support and very little padding in the sole, however, so I don't think would be suitable for running or even long walks.  I put in $10 "orthotic" pad from Dr. Scholl's, and that provides padding in the heel area.  My daughter wears similar Tiger shoes, and the lack of padding and support doeesn't bother her at all.