These have a little more style than usual.  I wear 41 in Mephistos, but usually 42 in Naot.  My foot is medium to wide and my heel just hits at the edge.  The second strap (at the top of the foot) gives good support.  The shoes are tight to begin with but they always loosen with wear.  There is extra space at the toe bed but it still works for me.  This shoe is probably meant for a narrower foot.