I love how these shoes look, and I love the soft leather and cushioning insole.  My problem with Clarks in general is that they tend to run really wide.  I have a wide toe box, but the normal width is perfectly wide enough for my toes without crowding them.  But even a 7M slides off my heels.  I have to put 1-2 sets of heel cushions in these to keep them from falling off and even that is not always enough.  If you have wide feet all over, these would work, but if you have a wide toe box and medium heel area, these will run too big in the back.  They are comfortable and look great so I am trying to live with the heel falling off through the use of moleskin and heel cushions.