Brooks Women&#39;s Adrenaline GTS, Wht/Silver/Excalibur,Brooks" /> 100% Mesh and synthetic Rubber sole Supported by its PDRB, the Adrenaline GTS 9 maintains all of its key ingredients while enhancing the ride with the long-lasting cushioning and resiliency of MoGo. Hydroflow in heel and forefoot that absorbs shock, stabilizes foot and returns energy back to the foot Progressive Diagonal Rollbar for pronation control which creates a smoother transiton through the gait Microfiber and Air Mesh Uppers. Weight 9.5 oz. S-257, this unique midsole compound is formulated to resist com-pression and rebound more quickly after impact than standard EVAs used in other brands.