Energize your ride with a rush that keeps you going mile after mile, each time you lace into the Brooks Ravenna 8 running shoe! Predecessor: Ravenna 7. Support Type: Overpronation/Stability. Cushioning: Lightweight, flexible response. Surface: 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 breaks down 50 times quicker at the landfill, compared to similar midsole materials. Diagonal Rollbar medial post adds support and promotes smoother transitions. Full-length S-257 Cushsole midsole compound utilizes an insole board for increased plush and flexibility. DRB Accel thermoplastic shank adds torsional rigidity in the mid-foot for extra support without compromising heel and forefoot independence. Midfoot Transition Zone and heel Segmented Crash Pad work together for quicker heel-to-toe transitions. Blown rubber in the forefoot for an extra-springy toe-off. Abrasion-resistant HPR Plus rubber throughout the outsole delivers long-lasting durability. Flextra rubber forefoot piece for increased flexibility. Omni Grooves in the outsole allow for multi-directional flexibility. Universal 1/2 Sprung Platform. Imported. Measurements: Weight: 10 oz Product measurements were taken using size 8.5, width B - Medium.Weight of footwear is based on a single item, not a pair.