Shoes fit well right out of the box.  One of the lightest weight cross training shoes I've every owned.  The cushioned bounce from the gel heel is a very welcome addition to my 50+ year old achilles.  I've never had a gel heel shoe before but compared to traditional cross training shoes these blow others outta the gym.  I've run a few miles in them and enjoy them even more than my running shoes.  My regular use of these is weight training, cardio training at a gym