These are great shoes. They were very comfortable to run in and I was very satisfied with the product. A little less than a year into owning them I had a little trouble with the sole of the shoe. I contacted On and had one of the best, most positive customer service experiences ever. They got back to me right away, and arranged to have a new pair sent to me. I was blown away by how friendly and helpful they were. I am sticking with this brand for life!