I have two pair of the original Brooks Addiction. My size 7.5 M was obviously a popular size. Waited for months to order another pair. Never available. Addiction Walker 2 was my only choice so I finally ordered them. When they arrived they looked "cheaper" than my others. I did not try them on as the others fit me fine. Now we are at Walt Disney World walking 10+ miles per day. My toes are numb. These apparently run about a half size smaller than the originals. Will be looking for another brand of walking shoes. These just are not as comfortable as originals.