The shoe is nearly perfect but the construction, of this pair, is very poor. The sole started de-bonding! The tread is about a 1/4 of an inch thick and it is peeling away from the foam cushion. I've ran in them less than 20 miles and I've only owned them a few weeks. They look brand new and I take very good care of my shoes. I'm returning them now and I am going to give Altra one more try with their Lone Peak 2.5.<br /><br />I need a good zero drop running shoe that can protect my feet. So close Altra... so close. I love everything else about the shoe, so much, that I considered gluing it back together. But I'm the customer! Don't make me do that... - Tianna's Husband