EVA sole Featuring simple design on knit vamp, delivers lightweight comfort and breathability. Anti-skid flex grooves outsole provides additional traction,flexibility and durability. Cloudfoam Memory sockliner molds to the foot for superior step-in comfort. Superior design at a superior price. A comfort system that helps reduce foot fatigue, cushions every step, designed for women. YOU WILL LOVE THESE: Energize your ride with a rush that keeps you going mile after mile, each time you lace into the Hawkwell running shoes!