ZIRAKI Adjustable Lumbar Lower Back Support Brace, 3X-Large/40-46, Black, One Size fits All DESIGNED TO HEAL: This lumbar belt is designed to support your lower back muscles, strengthen the loosened muscles, align your posture, and reduce the muscle inflammation and pain. It prevents further injury to the waist HEALING PROPERTIES: The tourmaline stones and magnets in this belt transmit heat to your knotted and strained muscles due to long seating/standing positions (including injury, pregnancy, or obesity DESIGNER BELT: Made from durable and soft fish line cloth, elastic fabric, and velcro magnet for added comfort. The ZIRAKI (TM) Adjustable Lumbar is available in sizes- S, M, L, XL, XXL, and XXXL