I thought i was going to purchase this shoe for walking outdoors, but found it to be so comfortable and light weight that it became one of my treadmill, indoor, running shoes. I had recently injured myself in a race and had to have meniscus knee surgery. My physical therapist, and the New Balance store technician  determined that i was a over pronated, my arch tend to lean inward when running. These are great for the over pronator. They are designed to drive your arch support outward. Great stability running shoe and a great looking.