Size:3 Made of breathable textile knee elastic three-layer material. Formed by three layers which are divided into an elastic fabric based microfibers, polyurethane foam and cotton toweling, which facilitates rapid dispersion of sweat, a higher elasticity and better adaptation. With silicone points inside that prevent the migration of the orthosis. Open Patella, metal strips with polycentric joints, femoral and tibial straps for better fit.