i would suggest looking at the view of the sole of the sandal. my foot is not shaped like a boomerang which causes my right heel to feel like it's falling off the outside of the sandal(no,i am not a pronator). rather than send it back,i built up the outside with small rubber strips and epoxy and it's working fine so far. other than that i like the feel and the fit, but prob won't buy anymore keen boomerangs.