I am an experienced runner and athlete and have been a life long fan of Asics gels, but this is definitely the crowning jewel of them all. They bounce back the energy you put in, they breathe wonderfully, while maintaining good water repellency. They really do help my performance. They're flexible but still rugged, the inside walls and arches support your feet perfectly and to top it all off, they are gorgeous! Love it love it love it!