I wear 7.5 ladies, always purchase size 8 and add an insert (use for walking through chicken houses) for support.  I love these short, wide boots...however, they run LARGE.  The shoe insert that I put in, cut as a size NINE, fit the boot perfectly.  Typically, I like to run large as each chicken house has to have a separate, dedicated pair of footwear and this makes for easy off. Slow walking is necessary so fit isn't that much of an issue.  If still too large, I will just add another insert.  So, while it works for me...might not work for everyone without a little more info. For walking out in public, I'd go with the size DOWN for half sizes...and they are wide.