Knee brace with polycentric joint created by the company Prim. It uses the colors blue and black for its design. It is closed, so it does not have fasteners or Velcro, although it does have an opening located just above the knee. It has straps that allow you to tighten or loosen the knee brace and thus get the perfect fit. The range of circumference at the knee is 41-45 cm, for a smaller or larger is better to use another size. Its function is to relieve joint pain in the knee, caused by sudden movements, tendon problems or other diseases such as arthritis. It is recommended for use by anyone who suffers from knee pain caused by a specific ailment. Use only if prescribed by a doctor. Avoid use if you have an open wound in the leg.