Knee support with a comfortable fit that firmly supports the knee and allows for easy movement. - Size: M - Materials: Nylon, polyurethane, and other materials; polyurethane for the bone support - Features: Comfortable fit for easy movement - How to use: Knee support to be worn on the knee - Suitable size: Knee circumference: 33-41cm Thank you for viewing. One is new and unopened, while the other was opened and tried on, but it was found not to fit, so it was put back in the bag. This is a set of two, thank you.