I am a courier for one of the major package delivery companies.  I walk all day.  I needed new shoes because my legs and calves were so fatigued at the end of the day.  New Balance is an approved shoe for work and my foot doctor recommends New Balance exclusively.  The shoes are great.  Super comfortable and have great traction.  I usually wear an 8 1/2 to 9 in women's.  I ordered a 9 1/2 because I have orthotics my doctor made for me.  The 9 1/2's were WAY TOO SMALL even before I put the orthopedic insert in.  I had to return the shoes and ordered a 10 1/2!  I am shocked that I had to order them so large!