Bilateral support hinges for stability and increased performance BEST FOR: Helps prevent and heal ACL/PCL Injuries, medial/lateral instability, hyperextension, patella instability, meniscus injuries, ligament sprains LEVEL 3 - MAXIMUM X-Fit® strap system securely wraps leg with comfortable overlapping hinge to maximize stability Bilateral support hinges with hyperextension stops and impact absorbing base pads Tempered aluminum stability stays securely anchored within Hypalon® sleeves Anatomical precurved enhanced-fit design Four-way stretch spandex [elastane] mesh at back of knee Premium stitching assembly, patella support finishing and spandex [elastane] binding for long lasting comfort Convenient finger tabs offer easy grip pull when fitting N-Tex™ air flow vented moisture-wicking neoprene WARNING: This product is not a substitute for medical care. Always seek professional medical advice for the diagnosis and treatment of pain, injury or irritation.