The Skechers GOrun 400 Generate Trainer 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. 5GEN midsole material delivers comfort and response. Goga Run insole provides shock absorption and support. Breathable sandwich mesh fabric and synthetic upper. Comfortable lightweight and well ventilated upper design. Sole with GOimpulse sensors for responsive traction and ground feel. Parametric midsole construction for support and stability. Weight: 8 oz. per shoe in a men's size 9. Super lightweight sandwich mesh upper Layered mesh for comfort and breathability Synthetic overlays at laces and heel for added support Quick-Fit Portal at heel for added easy wear Ideal for treadmill running and workouts.