To be honest, I did not buy them from Amazon. Got a better price at another site.  I'm a 50+ runner. (10 or so miles a week) Just did 3 mi on the virgin run, they felt like old friends. I've have had K 4's and my stand by's Nike 980's This is by far my favorite! They feel stable yet light and somewhat supportive for a neutral shoe. I read the reviews, and decided to up the size by 1/2 ..perfect fit. I normally go for a 2X. But, there is plenty of room in the toe box for me. If you have a narrow heal (like me) you will have to cross lace. The only reason for a 4 star...The laces that come with are not long enough to do functional lacing. But hey, for the price..I can buy longer laces.