The higher supplies distinctive help to the mid-foot and arch area. The sock liner is light-weight and chemical-free as it is manufactured from only castor beans and supplies a comfortable tight fit as many layers have been eradicated. Another important characteristic is the anatomical and asymmetrical heel counter and heel bucket. These assist in locking the foot down and enhancing stability and support. The counter is made of Pebax® Renew which is derived from castor bean oil.