Made from low profile lightweight aluminium, it features dynamic polycentric joints with flexion and extension control and limitation. Non-slip interior lining to provide comfort and protection. The joints include air-cushioned condyle pads. To adjust flexion and extension, it has galvanised steel wedges (to prevent corrosion) with different graduations. Limitation range: Extension: 0°, 10°, 20°, 30°, 40°. Flexion: 45°, 60°, 75°, 90°. The aluminium allows small individual adjustment. Adjustment and fastening system by means of adjustable straps that include non-slip protection pads for a better fit.