adidas Solar Boost Women's Running Shoes Raw Grey/White/Chalk Coral : Introducing the evolution of BOOSTA(R) technology with the adidasA(R) SOLARBOOSTA(R) running shoes. This new creation offers the superior BOOSTA(R) cushioning technology matched perfectly with a symmetrical SOLAR PROPULSION RAIL that works with the BOOSTA(R) to enhance overall stability for a truly smooth ride. The STRETCHWEB and CONTINENTAL rubber outsole provides runners with superior, adaptive traction that works with the runners stride. Upper: Features a textile upper and a stretch-mesh material around the forefoot for a comfortable, yet secure fit. Midsole: Full-foot BOOSTA(R) midsole provides unmatched energy return and superior cushioning. TORSIONA(R) SYSTEM allows for a smoother heel-strike-to-midfoot stance transition. Outsole: STRETCHWEB WITH CONTINENTAL(TM) rubber outsole with superior grip that adapts to every runners foot strike by moving in harmony with boost to provide a smoother and more flexible ride.