With super-slim feet, I'm thankful that New Balance makes athletic shoes in AAAA widths . . . but this shoe does not fit as good as the WW811 model I previously purchased.  I'm not sure what the problem is -- I just know it gaps as I walk, which gives each step a soft but unpleasant "thupping" sound.  Both styles are similar in appearance but not at all in fit.  In future, I'll either stick with the 811 or go back to custom-made athletic shoes.