Looking for replacement to discontinued NB 940 that I have used for years. Could not find satisfactory replacement in running shoes so I tried the 847. As others have said the shoe runs short - even so it did fit my 11aa feet. I like the fit. Roomy toe box & snug heel. My problem is with the forefoot. The balls of my feet begin to get sore after 10m min. of wear. The insole is thicker than my 940's so am not sure why this happens. Perhaps it's the different heel height. The sole is very firm & stable. So I am still looking for a narrow stability walker.