The Saucony Endorphin Speed 5 is a highly popular tempo trainer, suitable for race day, fast training sessions, and everyday use. This 5th version features an updated upper and improved outsole for continued popularity. It offers a perfect blend of propulsion and cushioning through a semi-rigid, winged nylon plate in the midsole, providing a snappy feel with a softer, more comfortable experience than some dedicated race shoes. The wings enhance stability, and the responsive, PEBA-based PWRRUN PB foam cushions your stride with lightweight bounce. The outsole is optimized with extra heel coverage for improved durability during fast strides and includes a full-length groove to enhance natural gait and provide smoother transitions. The lightweight, breathable mesh upper is designed for comfort during fast runs and looks great for daily wear. Key features include: Weight: 237g, Stack height: 36-28mm, Heel offset: 8mm, Semi-rigid nylon plate, Speedroll technology, PWRRUN PB cushioning.