RDX Authentic Lumber Lower Back Support Belt Brace Pain Relif Revolutionary anatomically shaped anchor system belt Two built in flexible steel spinal cord springs with 6 Carbon fiber stays Uniquely designed with closed cell neoprene rubber The flexible steels springs improve posture by preventing a slouched position Ideal for: Lower back pain, Sciatica, Herniated Disc (Prolapsed Inter Vertebral Disc - PIVD)