I bought this shoe primarily because of one of the reviewers stated that it helped with her heel and knee pain. I too, was suffering through my gym workouts and the heel and knee pain continued all day. After 2 weeks of gym use I can say that I am almost completely free of heel and knee pain! I started at the gym with a different pair of ASICS gel training shoe and was skeptical as to weather another ASICS would be so different-glad I took the chance! More color offerings would be great!