Brooks Men&#39;s Ravenna Running Shoe, Chianti/Yellow/White, 9 D,Brooks,Ravenna" /> 100% Mesh and synthetic Rubber sole Full Length BioMoGo provides a more cushy first feel that lasts and is enviornmentally friendly Rearfoot and Forefoot Hydroflow enhance midsole cushioning Full-length S-257 Cushsole gives the runner even more cushion with each stride Diagonal Rollbar gives provides medial support Universal Sprung Platform allows the foot the transition from heel to toe more smoothly