The Ariel is a great motion control that comes to the rescue of runners with low or flat arches and excess pronation. Featuring Heel and Forefoot HydroFlow ST-XLcushioning system, it absorbs shock, stabilizes the foot, and returns energy back to the foot. The new MoGo midsole compound increases energy return. The thermo-regulation is the latest addition to its superpowers, thanks to the new Ultimate silver-embedded X-Static in the sockliner and linings that move heat away form the foot. High-density carbon rubber in the heel for increased traction and outsole durability. Air mesh upper and linings. Weight: 12.3 oz. Made in China.