General Application: Great for alleviating knee pain and providing moderate knee joint stability Medical Applications: Patello-Femoral pain syndrome, Patellar tracking, chondromalacia, minor meniscus and ligament tears How It Works: Provides patellar (knee cap) stability with compression surrounding patella. Offers stability on medial and lateral sides of knee. Design Theory: Breathable, soft fabric offers 4 way stretch applying even, comfortable compression throughout brace. Thick oval gel provides excellent comfort and support to patella (knee cap) area. Medial (inside) and lateral (outside) spiral stays offer overall knee joint stability. Sizing Chart Item 7200 Small (13” – 14”) Item 7201 Medium (14” – 16") Item 7202 Large (16” – 18”) Item 7203 Xlarge (18” – 20") (Circumference measured 1” above top of patella).