Saucony Womens Endorphin Speed 5. The Endorphin Speed 5 Is Built To Go Fast And Feel SmoothWhether You're Pushing The Pace On Track Night With Friends Or You're Chasing A Pr. A Newly Designed Nylon Plate And Responsive Pwrrun Pb Cushioning Come Together For Snappy Transitions And A Fast Ride. This Is Speed You Can Count On. Style Code: S11007-10 The Finer Details. A Full-Length Semi-Rigid Nylon Plate Between Two Layers Of Responsive Pwrrun Pb Foam, Giving You A Perfect Balance Of Propulsion And Cushioning For Every Stride. New Lightweight Engineered Mesh For An Even More Comfortable Fit, Perfect For Fast-Paced Runs And Daily Wear. Reconfigured Outsole With Expanded Coverage In The Heel For Greater Durability During Your Quickest Strides. Full-Length Groove Enhances Your Gait Cycle, Giving You A Smoother Transition From Foot Strike To Push-Off. Women's Saucony Endorphin Speed 5 Running Shoes in White/Grey | Size 8 | Nylon