Owing to its shape, this model prevents rotation and equinus distortion and streams hollow air underneath the achilles tendon. The pressure relief area guarantees that the heel is completely pressure free, and the length of the model is provides just the right amount of support for the knee. With its curve design, this model is able to provide unmatched absorption and uniform pressure distribution around the leg support. There is no need for a bed frame thanks to the height of the system, which ships with a protecting cover.