Knee supports such as the "ニーケアー・OA 1" made by Alcare. Features: Controls lateral movement and hyperextension, stabilizing the knee joint. Structure: Aluminum stays with an offset joint structure support both sides of the knee, and the size is designed to fit the circumference of the patella. Comfort: The unique leaf cut design reduces lifting during knee flexion and extension. Uses: Primarily used when lateral stability of the knee is required. Although unused, it was taken out of the bag, so I marked it as "Like new". #KneeSupport