NB MW845 is a great walking shoe.  I wear custom orthotics in most of my shoes, but they are not required for these walking shoes.  The Rollbar support system effectively stabilizes my feet and controls pronation.  I look for shoes with rollbars and have NB MX855 cross-trainers and 2 pr. of Dunham 8000 casual shoes (also sold at New Balance stores)  ... all of which I rate at 5 stars. Anyone having foot stability problems should try these shoes.  The MW845 also provides great cushioning ... almost feels like you're walking on pillows.  I used to limit my walks to about 30 minutes because longer walks caused pain in my right knee and hip (I am a 75 year old senior).  But with the MW485's I routinely walk pain-free for 45 minutes at a slightly faster pace than I used to walk.  The MW845 has a unique way of attaching the tongue to the shoe.  The tongue is attached to the shoe in three places: the normal stitched attachment at the front of the tongue plus elastic attachments on each side of the tongue.  This arrangement is comfortable and seems to keep the tongue in place during exercise.  I replace my walking shoes about every six months and have been using the MW845 (and its predecessor MW844) for over two years with consistently excellent results.  My normal shoe size is 9D, but I wear a 10EE in NB shoes and 10D in Dunham shoes.  I highly recommend NB and Dunham shoes to family and friends.