Ordered a 41 Narrow, womens. While the size of the footbed was a perfect fit. The overall sandal was too big. Even when I adjusted the strap to the last hole my foot was still slipping out. The part where my toes are is just too big. This caused me to trip when going up stairs as my foot has enough space to completely  lift off of the footbed when I raise my feet. May be better suited for someone with very thick/fatter feet.  Very disappointed. I cannot wear my slippers as I would like.