Sewn-in, silicone donut provides inferior, superior, medial, and lateral patellar stabilization. Single spiral stays offer medial and lateral support. Lightweight, breathable, elastic cotton construction. Designed to address mild patella discomfort. #11-0345-1-04000-XSm #11-0345-2-04000-Sm #11-0345-3-04000-Md #11-0345-4-04000-Lg #11-0345-5-04000-XLg #11-0345-6-04000-XXLg UNSPSC#42241700