adidas Solar Glide ST Men's Running Shoes Gray/White/Solar Orange : Introducing the evolution of BOOSTA(R) technology with the adidasA(R) SOLARGLIDE ST running shoes. This guidance-focused design features a SOLAR PROPULSION RAIL that works with the energized boost to provide a smooth, stable run. ENERGIZED STABILITY comes from a firmer boost placed on the medial side of the shoe that promotes a guided footstrike during the run. Upper: Features an ENGINEERED MESH upper material around the forefoot for breathable, flexible comfort and added medial support. A supportive heel FIT COUNTER enables the free movement of the Achilles tendon. Midsole: Full-foot BOOSTA(R) midsole provides unmatched energy return and superior cushioning. Includes ENERGIZED STABILITY from a firmer boost on the medial side that provides the added stability that guides the foot from heel strike to neutral toe-off. TORSIONA(R) SYSTEM provides stability and propulsion throughout the midfoot phase of the gait cycle. 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.