Features:Stretchy circular-knit and breathable mesh on upperFull-length, superlight ZoomX foam provides springy cushioning.Full-length Air Zoom unit helps propel you forward like never before.ReactX foam midsole is 13% more responsive than previous React technology.Crafted for performance and planet, ReactX foam is engineered to reduce its carbon footprint by at least 43% in a pair of midsoles due to reduced manufacturing process energy compared to prior React foam.Modified waffle outsole has high-abrasion rubber to provide traction.Specs:Weight: Approx. 275 g/9.7 oz (Women’s US 8)Heel-to-toe drop: 10 mm