It’s made of high quality neoprene and It’s designed to support knee joint. Perimeter of the patella is open and silicone pad supported. Aluminum joints on both sides provide maximum support, allow controlled motion and prevent knee hyperextension. Velcro fasteners on the upper and lower calves increase stabilization. It can be used for pre and post operation. INDICATIONS Ligament injury and instability-Meniscus lesions 1st and 2nd degree sprains and stains Post-op or trauma for protection purposes SIZE KNEE CIRCUMFERENCE(CM) S 31-34 M 34-37 L 37-40 XL 40-44 XXL 44-48 Declaration of Conformity CE