Applies gentle pressure to patella to reduce patellar subluxation and dislocation. Improves patella tracking and elevation. Universal fits 12" to 22" (30.5cm to 56cm); XL fits 12" to 29" (30.5cm to 73.5cm). Availability: Usually ships the next business day. Patella (Knee Cap) Strap Universal 9996447$16.16