I bought these because my kayano 19s were amazing, but way worn out. The kayano 20s have been disappointing. With the 19s my feet and legs no longer hurt when walking or running. I'm on my feet a lot as a teacher. With the 20s my feet, ankles, calves are hurting a lot. Updated: Within 2 weeks the fabric around my ankle began splitting. It just gets worse. I loved the others I had 4 pair of the same shoe. These ones are so cruddy, now I'm hesitate to buy another pair since there is no consistency and they are not cheap shoes.