Choose Greatness� Skechers GOrun 600� - Circulate is a well-cushioned, lightweight trainer perfect for a variety of workouts in and out of the gym. The responsive 5GEN cushioning midsole and a breathable mesh upper offer an incredibly responsive workout shoe. Details 5GEN midsole material delivers comfort and response Air Cooled Goga Mat insole provides shock absorption and support Breathable sandwich mesh fabric and synthetic upper Comfortable lightweight and well ventilated upper design Sole designed for responsive traction and ground feel Parametric midsole construction for support and stability Weight: 8 oz. per shoe in a men's size 9 1 1/4 inch heel Construction Super lightweight sandwich mesh upper Layered mesh for comfort and breathability Synthetic 3D printed overlays at sides for added support Side S logo detail Synthetic heel panel with separated design Lace up front Quick-Fit Portal at heel for added easy wear Well padded smooth heel collar and lining for added comfort Ideal for treadmill running and workouts