I originally ordered the 10 C/D, as I wear a 10 wide in New Balance.  The 10 C/D turned out to be way too long, so I returned them and went to my nearest store that stocked these shoes to get the sizing right before re-ordering.  I am so very happy with the 9 C/D - they're not as wide as a New Balance wide but as long as I stick with thinner socks they fit well.  They are so comfortable for long walks.  The design of the shoe really seems to help the foot move properly through the stride, which in turn means less fatigue.  I would definitely recommend these shoes.  I should point out that these shoes have helped in my rehabilitation from a hip replacement.  I had a pair of New Balance Women's WW755 Walking Shoe (Brown,10 D) slip-ons which were great for the first month post-op, but once there were no swelling issues to accommodate and I was able to walk 45 mins I turned to the Clarks Wave. Run for more support.  I recently received a pair of Clarks Wave. Circuit lace-ups and they are much narrower in the toe box.