SAUCONY ENDORPHIN TRAINER WOMEN'S SHOESThe Endorphin Trainer is our first premium fast and light training shoe that combines the innovation, efficiency and a distinctive feel of the Endorphin franchise but engineered specifically for everyday training runs and high mileage weeks. Features And Benefits A top layer of our lightest, most efficient and most responsive incrediRUN foam combined with a structured bottom layer of our highly durable PWRRUN results in unmatched efficiency but in a