Try a new level of comfort with adidas' TechFit technology. Llightweight, flexible, and supportive, the upper stretches and moves naturally with your foot, mile after mile. Molded EVA sockliner molds to the shape of your foot for a snug, comfortable fit. External TPU heel counter cradles the heel for a secure, locked-down fit. BOOST foam midsole provides extreme energy return to propel you forward, while TORSION SYSTEM smooths your stride for a natural transition. Blown-rubber outsole for traction and durability on multiple surfaces. Wt. 10.2 oz.