Brook Ravenna 11
GuideRails® Holistic Support System. Brooks shifted its focus beyond the feet to the most injury-prone part of a runner’s body: the knees. GuideRails® support technology keeps you moving comfortably by keeping excess movement in check. Fast Cushioning with a BioMoGo DNA midsole for responsive cushioning and rebounding rubber deliver comfort without adding extra weight. Perfect for days when you're working on your speed. The Ravenna 11 has quick transition from midfoot to forefoot with The Midfoot Transition Zone which is shaped to go from heel to toe quickly.The upper is a lightweight breathable one-piece, single-layer mesh upper with an internal bootie offering maximum breathability without extra weight. A secure fit around the arch from an internal saddle.