Flexo extensor knee brace short 35cm in height that is especially indicated in cases of post-surgical treatment of the knee, rehabilitation and pathologies in which it is important to control the articular range of the knee, helping to provide a compression effect, support, adjustment and a medio-lateral stabilization. It is made with a breathable three-layer material, formed with three layers divided into an elastic fabric based on microfibers, polyurethane foam and cotton terry, providing greater elasticity and facilitating rapid dispersion of sweat.