The only running shoe I ever purchase on line is the New Balance M450 because I could always depend on the quality and size.. I have no problem with the quality - it remains constant. The size dependability is a problem. Recognizing that feet have a tendency to get slightly longer as we age, I purchased size 10.5 instead of my last purchase of 10.0 about four years ago.. The shoes were still rather snug around my toes, and have remained so. Disappointed.