Brooks Men's Ravenna 10 Running Shoe Blue Orange Gray Size 8.5 The Brooks Ravenna 10 running shoe boasts a breathable, comfortable, and supportive construction that gives you the stability you need to run at your best every day. One piece mesh and synthetic upper provide excellent breathability and durability 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 textile footbed with energy-returning technology that provides excellent cushioning and shock absorption BioMoGo DNA midsole supplies long-lasting cushioning, and features an environmentally-friendly build that breaks down 50 times quicker at the landfill, compared to similar midsole materials Diagonal Rollbar medial post adds support and promotes smoother transitions DRB Accel thermoplastic shank adds torsional rigidity in the mid-foot for extra support without compromising heel and forefoot independence Blown rubber in the forefoot for an extra-springy toe-off Durable rubber outsole with superior flex grooves for excellent flexibility and traction