Thorlo designs their socks with the belief that protection is the "root cause" of comfort. With this in mind, we all experience fat pad deterioration in our feet over the years due to impact and shearing forces from running, walking, and standing on hard man-made surfaces like concrete, asphalt, and hard floors. Thorlo's engineered cushioned fabric helps to replace the function of the lost natural fat pads in our feet. Rather then the foot taking the punishment, your Thorlo's transfer the forces from your feet to the protective cushioning. Ah, comfort!