According to this 1993 ad for the New Balance M678, the specially developed last that was used for this shoe matches the curvature of a runners foot. In addition there was extra room in the toe box, and they came in widths B through EEEE (Nice). You also have to love the fact that New Balance took a little jab at Reebok and Puma when they said “this means you won’t have to inflate the M678 to make it snugger, or adjust its disc to make it looser.” The shoe featured a combination polyurethane/EVA midsole, lightweight synthetic suede, mesh and leather upper with reflective inset collar. Original retail price was 85 USD and oh yea, Made In The U.S.A. Take a trip back to 1993 above!