These run about a half size large I'd say.  They don't have much support like most of the cheap foam shoes you see on here and they don't look like they will last very long but DAMN THEY ARE COMFORTABLE!  We'll see how long they last, but they look ok.  I wouldn't do much but walk around on hard surfaces indoor with these but they are great for that.  I have heel pain problems and the design of the sole cushions my heel very very well.  Even if they don't last I'll keep buying these since they are so cheap!