ACTION AND DESCRIPTION Double lateral stabilization that provides extra support in cases of joint instability and overload, helping to relieve acute knee pain. For prevention of repeated micro-traumas. Anatomical design and four-way stretch fabric for an excellent fit. Manufacturing materials: Polyester, nylon, cotton and rubber. To put it on, slide the knee brace up to the knee and until the patellar opening fits perfectly to the patella. 208963 SIZE S 20896. SIZE M 208961 SIZE L It has CE marking