Make it to the finish line in a flash with the Saucony Endorphin Pro 4. Streamlined for race day, the Endorphin Pro 4 is built for speed. With updated cushioning, an improved race-ready upper and a new outsole design, your runs will feel faster than ever. The carbon plate and rocker geometry propel you forward in a flash to help you break those personal records. Details: Upper: An improved race-ready design that has a smooth heel liner and integrated tongue. In our Saucony Endorphin Pro 4 review, Ashley said “The upper in the Pro 4 is light and airy. In some ways, it feels like I’m wearing a sock with a sole. And honestly, I can’t think of a better feeling for a fast workout and race-day shoe than that!” Midsole: There is a new dual-cushioning system in the Endorphin Pro 4 that uses PWRRUN PB Pebax-based foam combined with PWRRUN HG foam which is Saucony’s most energy-efficient foam. The result is a shoe that is super lightweight, cushioned and energetic. Saucony combined these foams with their snappy SPEEDROLL technology that provides for fast, forward motion while the trusted carbon plate gives you a smooth turnover and more efficient strides. Outsole: A new lattice-designed outsole provides for smooth runs and more traction on the road when you are racing at breakneck speeds.