Saucony Endorphin Speed 4 - designed for race day but loved for its comfort and durability. This trainer is ideal for tempo runs, long distance cruises, and achieving personal bests. It features a midsole blend of PWRRUN PB foam for a bouncy, lightweight feel, a winged nylon plate for flexible propulsion and vertical reinforcement, and Speedroll technology for smooth transitions. The shoes weigh 206g with a stack height of 36mm at the heel and 28mm at the forefoot, offering an 8mm offset. This style is vegan and contains recycled materials. The SRS (Super Responsive Sockliner) enhances the dynamic and responsive cushioning of the PWRRUN PB foam, challenging you to bounce with every stride. The redesigned winged, fluted TPU plate provides vertical reinforcement while maintaining forefoot flexibility. The engineered mesh and integrated upper ensure a perfect and secure fit.