Engineered with multi-directional flex nodes and a full-height heel, the SmoothFlex 2.0 running shoe is designed to help your feet move and flex freely without sacrificing that traditional, supportive feel. It’s natural movement - perfected.
Bought a pair of these on sale at Sears the other day and do a 3 mile trek up n down hills where I live ... I had knee n feet problems as I have aged and no troubles on my walk and no break in time .... I have no feet or knee problems .... Fantastic shoe :-)