It is made of neoprene fabricand is anatomically designed. It’s special pad, which applies light pressure from the lateral patella to the medial patella, stabilizes the patella in the event of lateral dislocation or semi-dislocation of the patella. The compression he applies keeps the patella in the patellofemoral groove. Medial and lateral spiral reinforcements increase stability around the joint. Indications Patellar instability Lateral subluxation/dislocation of the patella Lateral patellofemoral compression syndrome Anterior knee pain SIZE KNEE CIRCUMFERENCE(CM) S 31-34 M 34-37 L 37-40 XL 40-44 XXL 44-48 Declaration of Conformity CE