I have worn Sketchers mule shoes for over 10 years.  I always buy and 8.5 size.  This pair was not true to size ... AND... had a TERRIBLE RUBBER ODOR of some sort.  I couldn't even keep them in the house because they smelled so awful.  I stored in the garage until I could return.  Went locally and bought the same style and size and they fit great and didn't STINK!!!