Perfect knee support for active lifestyles,the dials and the leg wraps are made of hook and loop fasteners attachable soft padded fabric, the dials are also padded in order to keep the knee comfortable.Instructions: 1. The fixing strap at the upper end of the adjustable knee orthosis is fixed at the thigh above the knee joint. Fix the calf strap at the lower end of the knee orthosis to the calf. 2. After fixing the thigh strap and the calf strap, connect the adjustable knee joint hinge with the thigh strap and the calf strap. 3. Fix the hook and loop fastener through the plastic ring and the fixing straps at both ends. 4. Adjust the scale of the dial to the appropriate angle.Specification: Material: Rigid aluminum alloy support strip Weight: about 680g / 23.99oz Size: S, M, L(optional) ?Attributes Size: S Thigh Circumference: 39-45cm Calf Circumference: 32-39cm ?Attributes Size: M Thigh Circumference: 45-51cm Calf Circumference: 39-46cm ?Attributes Size: L Thigh Circumference: 51-59cm Calf Circumference: 46-52cm Measurement diagram: Measurement methods: Above the keen 15CM and below the keen 12CM measurement.Scope of application: 1. Meniscus injury. 2. Knee joint ligament sprain. 3. Acute soft tissue damage. 4. Anterior and posterior cruciate ligament injury. 5. Knee collateral ligament injury. 6.Knee joint Stretch.