I normally wear a size 8.5M or 9 in shoes.  The first pair I ordered in a size 9 was defective but I didn't realize it since I had never worn this brand or style of shoe. The right foot was too loose and the leather along the sides stuck out- especially when bending my foot.  The top of the toe-bed was not sewn properly creating a warped/twist on the entire shoe's leather.  I ended up ordering a size 8.5 in hopes that the issue was just size  but they were way too tight so I finally tried another size 9 and they fit perfectly.  These shoes have a very comfy insole.  I wouldn't say they are narrow but they are definitely on the narrow side of medium width.  If you have a truly wide foot, you may not be able to wear these.  Since I ordered my usual half-size larger ( size 9) they worked for me and are comfortable and will most likely stretch with continued wear.  I also ordered a set of Helloheel Fitter Grips to help cushion the inside of the heel and prevent slippage.  However, with the new pair I haven't needed to use them.  Just thought I should mention them as an option in case any of you have heel slippage.