MeshImportedSurface: Road. Differential: 10 mm. Air mesh fabric upper provides optimal breathability and moisture management. Adjustable synthetic saddle pulls from the heel to wrap the foot for a secure fit. Lace-up closure. Plush tongue and collar. Wraparound heel collar and padded interior for optimal comfort. Soft Element fabric lining offers a great in-shoe feel. Removable profile sockliner. BioMoGo DNA midsole supplies long-lasting cushioning, and features an environmentally-friendly build that bKeep going mile after mile with the energized rush and responsiveness of the Brooks? Ravenna 9 running shoe!Predecessor: Ravenna 8.Support Type: Overpronation/Stability.Cushioning: Lightweight, flexible response.