The M4s Comfort Functional Knee Brace that offers excellent strength, durability and patented technology to provide exceptional performance. The rigid frame design incorporates medi's unique S-frame design, which utilizes the time proven four-point principle to help control and support knee movement. Available in a 'compact' size for shorter patients or anyone needing a brace to fit over special footwear such as ski boots. FEATURES Low-profile, light-weight frame with a 4-point hinge Malleable frame allows for customization to individual needs Floating buckle system with numbered straps for easy application Patented Physioglide hinge matches the knee's natural movement Extension/Flexion wedges provide custom protection and limitations: Extension limitation at: 0, 10, 20, 30, and 45 degrees Flexion limitation at 0, 10, 20, 30, 45, 60, 75, 90 and 120 degrees Immobilization at 0, 10, 20, 30, and 45 degrees. CONDITIONS/INDICATIONS: Support after cruciate ligament ruptures (ACL, PCL, MCL), Collateral ligament ruptures with meniscus lesions, Conservative treatment of knee instability (isolated or combined) SUPPORT LEVEL: MAXIMUM – Braces and guards designed to provide the ultimate protection and support MATERIAL: Aluminum, polyester, polyurethane, nylon