Saucony Mens Endorphin Speed 4. We're All Seeking Relationships That Go The Distance. The Endorphin Speed 4 Running Shoe Is Here To Fill The Role. Designed As A Race-Day Shoe, It's Quickly Proven Itself Much More, Equally Capable During Long, Moderate Training Sessions And Sprints To The Finish. Thanks To The "just Right" Combination Of Winged Nylon-Plate, Speedroll Technology And Pwrrun Pb Foam, This Cushioned Running Shoe Provides The Perfect Balance Of Support, Rebound And Forgiveness. This Product Is Not Eligible For Discount. Style Code: S20940-68 The Finer Details. Smooth Speedroll Technology For Effortless Speed, Smooth Turnover And Propulsive Forward Motion. Pwrrun Pb Foam Is A True Unicorn, Offering The Best Combination Of Cushioning And Energy Return Of Any Foam On The Market. Re-Engineered Winged Nylon Plate Provides Reinforcement While Maintaining Flexibility. Men's Saucony Endorphin Speed 4 Running Shoes in Navy Blue | Size 7.5 | Nylon