This is not the actual shoe I ordered.  I ordered the Devotion model.  That being said this shoe is unexpectedly comfortable.  It is not as soft as the Devotion but it seems (so far) to work better on the treadmill.  I don't feel as if I am going to fall over and can walk with my arms swinging which helps up the heart rate.  The only reason I gave it 4 instead of five is that it is not quite as soft on the feet as the devotion and I actually did order the other one but was sent this one.