Features 1. A design that is extremely lightweight, low-key in appearance, and easy to use. 2. The condylar pad can improve comfort, stability, and pain control. 3. Quickly release the buckle for easy on and off. 4. Silicone lining and padding help prevent migration. 5. Instructions for use: Use a screwdriver to remove the screw used to insert the flexion/extension stop, remove the existing stop, and insert a new insertion stop. This is the required degree of flexion/extension. Install the screws back. Ensure that the screws are in place and secure. The degree of the inner (inner) hinge and the outer (outer) hinge stop must be the same. Specification Material: Plastic Style: Left, Right Color: White, Black Size: 31 x 20 x 11 cm Weight: 700 g Package Include: 1x Knee joint support