Chasing New Prs Feels Easier In These Adidas Running Shoes. The Lightest Boost Yet Delivers Continual Energy Return Across The Kilometers So You Feel Fresh From Start To Finish. Add The Torsion System Between The Heel And Forefoot For Stability And You Get A Smooth, Steady Stride No Matter How Far Or Fast You Go. It All Rides On A Continental Rubber Outsole For Secure Traction In Wet And Dry Conditions To Keep You Confident On Your Feet.