Bring the everyday speed with the Saucony Endorphin Speed 4. Designed to push your pace, the Endorphin Speed combines Saucony’s lightweight, energetic cushioning with their rocker, SPEEDROLL technology and a nylon plate to propel you forward. In our Saucony Endorphin Speed 4 review, one runner even stated that an easy run turned into a tempo run because the shoe was so much fun that she just “let it fly and enjoyed the ride.” Details: Upper: An improved upper design is constructed with zonal engineered mesh and an integrated tongue for a connected, secure fit. Midsole: The PWRRUN PB cushioning gives you an energy-efficient superfoam that provides a snappy ride. It’s combined with a redesigned nylon plate and SPEEDROLL technology that propels you forward. Outsole: A new lattice-designed outsole provides for smooth runs and more traction on the road.