The Patella Stabilizer Sleeve features a supportive foam ring that gently surrounds the kneecap to reduce pain, swelling, and instability. Made from BioSkin’s soft, compressive fabric, it provides effective support for active recovery from anterior knee pain and chondromalacia while allowing full, unrestricted movement. Size Large measures 22-25cm 7" above knee cap and measures 16.5-18.5 6" below knee cap.