I've been looking for these Cole Haan oxfords for a while but couldn't find them anywhere. I finally got lucky on Ebay. The laces were horrible and couldn't be removed so I had to cut them. I found a nice replacement pair of laces also on Ebay. These shoes have something they call Nike Air technology. Gas is trapped in a capsule somewhere in the heel and that is supposed to make the shoes more comfortable. I personally don't think it makes much of a difference to an already comfortable shoe.