Made of soft foam with numerous closed air bubbles. As a result, the cushion is susceptible to pressure and perfectly adjusts to the shape of the user’s body. It maintains the lower limb slightly raised, which improves blood circulation and reduces the risk of swollen ankle. It can be used as a support for compression therapy and anti-decubitus treatment. It prevents from bedsores that can appear on heel bone. Reduces risk of thrombophlebitis (vein inflammation). The length is excellent to support the knee against the hyperextension.