The Saucony Endorphin Pro 3 is all about speed. A carbon-fiber plate and thick stack of PWRRUNPB foam provide pop and energy return for the ultimate racing experience. The Saucony Endorphin Pro 3 combines a propulsive carbon-fiber plate with soft yet responsive cushioning. Features: Lightweight and energetic midsole S-curve carbon-fiber plate gives spring and pop FORMFIT design for a personalized fit and feel Max stack of high-performance PWRRUNPB foam cushioning The Endorphin Pro 3 is an elite marathon racing shoe designed to help runners slash time off their personal bests. The Endorphin Pro 3 features Saucony’s highly responsive and cushioned PWRRUNPB foam wrapped around an S-curve carbon-fiber plate for maximum energy return with each step. SPEEDROLL rocker technology promotes a fast and efficient transition through its curved design. A lightweight and breathable FORMFIT upper wraps around the foot for a personalized fit and an XT-900 rubber outsole provides solid traction and durability. The Saucony Endorphin Pro 3 is a racing shoe ready to take on the best from 5k to marathon.