Designed as a fast-paced shoe, it quickly proved to be much more than that, just as capable during long, moderate training sessions and sprints to the finish line.The energy-efficient PWRRUN PB foam springs back with every step, combined with a winged nylon plate that offers torsional rigidity while maintaining flexibility in the forefoot, for a stable and responsive ride.The SPEEDROLL technology ensures effortless speed and a forward-moving momentum you can rely on every day.An increased amount of rubber covers the heel, extending higher on the shoe and around the edges for added durability.A longitudinal groove running the entire length for increased flexibility and a more natural, smooth transition in your stride cycle.A brand new designed mesh, lightweight for your fast-paced efforts, and made for comfort so you can enjoy them every day.BEST FOR Speed days/Race daysCUSHIONING PWRRUN PBSOCKLINER SRSOFFSET 8mm (36/28mm)WEIGHT 8.4oz (238g)SIZES Men 7-13, 14, 15SUSTAINABILITY This mo...Saucony Endorphin Speed 5: agility and response for speed and endurance The Saucony Endorphin Speed 5 combines lightness, reactivity, and stability for intense training or competitions. With PWRRUN PB foam and nylon plate, they offer a fast and natural stride at any pace. Surface: asphalt Shoe type: neutral Use: speed training / competition Weight: 238g Drop: 8 mm Cushioning: PWRRUN PB Plate: nylon with wings for torsional rigidity and forefoot flexibility