Experience the evolution of speed with the Saucony Endorphin Speed 4, an upgraded iteration that retains the familiar aesthetic of the Speed 3 while introducing key enhancements for an elevated running experience. Distinguished by its redesigned knit and mesh upper, the Endorphin Speed 4 prioritizes fit, comfort, and durability. The padded knit tongue ensures a secure fit, adapting to a diverse range of foot shapes and sizes for an optimized running experience. At the heart of the shoe is a significant midsole innovation, featuring Saucony’s high-performance dual foam construction in the form of PWRRUNHG. This powerhouse material is renowned for its unmatched rebound, promising a responsive and energizing ride with every step. The durable and grippy outsole is designed for traction and protection on various surfaces. Flex grooves enhance flexibility and responsiveness, while strategically placed rubber pods offer grip and safeguard high-wear areas. Building on the success of the winged nylon plate in the Speed 3, the Speed 4 introduces a precision-engineered plate. This enhancement optimizes running biomechanics, particularly focusing on the heel-to-toe-off transition for a seamless and efficient stride.