Mueller Green Adjustable Hinged Knee Brace, Black, Fits Left or Right, One Size Fits Most

Metal hinges help protect knee from hyper-extension. Side-hinge pockets help ensure hinge is in the correct position for your knee size. Open patella helps stabilize knee cap. Adjustable tabs provide custom fit for controlled compression. ONE SIZE FITS MOST: Measure around the knee, fits 13 - 21 inches.