adidas Solar Boost Men's Running Shoes Tech Indigo/Core Black/Solar Red : 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 asymmetrical 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 runner's 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 smoother heel-strike-to midfoot stance transition. Outsole: STRETCHWEB WITH CONTINENTAL(TM) rubber outsole with superior grip that adapts to every runner's foot strike by moving in harmony with boost to provide a smoother and more flexible ride.