I wore them around the house and my heel got sore after less than an hour. If you run your finger along the insole (you may need to remove it) you will feel the point where the soft “boost” piece joins the hard part of the sole. It is like having a permanent stone in your shoe. Shoes need to be a combination of cushioning and support. The cushioning and support are not working in this design. When I brought them back to the store I was told that the cushion would probably wear down in time but that means that the hard bit would be sticking up. Placing a boost implant in at the heel when the runners have the boost the length of the foot makes no sense. These are badly designed shoes. If only asics would introduce a gel kayano 20 series golf shoe!!!! That would be comfort beyond belief.