It's very uncomfortable. I'm writing this review after owning these for 7 months and still grating them raw. I've worn Tom with great comfort all my life, right out of the box. Not this one. I wore them diligently to break. I took a little walk around the block today and finally found that they never hurt. I have attached photos of my feet after running for 5 minutes and owning and wearing these shoes for all these months. Buy regular volumes, not this one.