It allows normal flexion and free movement of the knee joint. Neoprene layer bonded with nylon fabric on both sides : Four way stretch ability gives a controlled and comfortable compression in various positions of the knee. Ensures longer life appealing aesthetics with color fastness better body heat retention faster pain relief and healing. Anatomical shape : Relieves patellar pressure holds the patella in position and can be used for patello-femoral diseases. Bi-axial heavy duty aluminum hinge : Mimics the natural knee joint ensures full weight bearing and allows free flexion movement. Ergonomic design : Anti tourniquet effect ensures no constriction to blood flow better grip of the product to the body anatomic construction better functionality and snug fit.