This is one of the best running shoes I've found and they feel like I'm running on a cloud. I was about to buy some brooks but I am very happy with this product. I work out in the gym 3 to 4 hours every day except Sunday and my workout is extreme and I only rest when I'm going from one set to the next and these shoes keep going and they don't lag no matter if I run , walking, weight training in these shoes, as far as I can tell they are bad to the bone and worth every penny.