The Saucony Endorphin Pro 4 in White/ Mutant is designed to elevate your running experience, whether you're preparing for race day or tackling tempo runs. It features PWRRUN HG foam for enhanced energy efficiency and a PWRRUN PB layer for a responsive, bouncy feel. Speedroll technology and a full-length carbon fiber plate ensure quicker turnover and sustained momentum. The shoe also prioritizes comfort and durability with an ultra-thin XT-900 carbon rubber outsole for excellent traction and a breathable mesh with a flat knit tongue for a comfortable, sock-like fit. This shoe offers speed and efficiency for competition, combining double foam, a carbon plate, and an ultra-lightweight design for an explosive and efficient stride.