Great preloved condition, needs a wipe down as there is dirt on the outer side of the shoe. Mesh Imported Synthetic sole Speedform Technology - Delivers zero distraction while running. Seamless Heel Cup - With a foam collar provides a locked-in, anatomical fit, keeping you comfortable. Smooth, Ultrasonic Welded Seaming - For next-to-skin support and comfort. Perforated Upper - For durable breathability.