The Pinnacle Of Performance And Design, The Women's Ultra Boost X From Adidas Have Been Engineered With Clima Technology For 360 Degrees Of Breathability. Open Primeknit Uppers Wick Away Moisture And Wrap To The Contours Of Your Foot For A Supremely Comfortable Fit. An Integrated Torsion System Between The Heel And Forefoot Stabilises Your Stride For Natural Range Of Motion, And A Boost Midsole Absorbs Energy From Your Every Step And Releases It At Push-Off