Running long distances carries with it significant stress on the feet. The 2IN Running sock's Two Layer system delays the onset of feelings of fatigue. This guarantees optimum comfort and prevents blisters from forming. The ergonomic design and double bandage around the ankle allow the sock to stay firmly in position and to provide support for your feet as you run. The Cool Air Flow technology traps air between two layers to create an insulating effect that keeps the temperature on the surface of the feet at a constant. Areas with increased breathability allow moisture to be wicked away. This leaves runners' feet feeling good even after many miles.