Shoulder Suspension/Rotation Brace S-XXL (534) The Ortho Active Shoulder Suspension/Rotation Support treats tendonitis and overuse injuries. Anterior and posterior strap attachments at the chest allow more influence over shoulder positioning. A sharkskin lining and adjustable opening at the bicep ensures that the brace does not migrate from the desired position. Left or Right Sizing: SizeBicep CircumferenceChest Circumference S 10.5″ – 11.5″ 25″ – 35″ M 11.5″ – 12.5″ 29″ – 41″ L 12.5″ – 14″ 32″ – 47″ XL 14″ – 15.5″ 36″ – 54″ XXL 15.5″ – 17.5″ 41″ – 61″