Check the listing for details. Low Back Support Brace Belt Large - L Adjustable Tourmaline Self Heating Warming. Color: Black, Condition: New, Made in China. Listed at 24.93 USD. Low Back Support Belt Brace with Tourmaline for warmth/heating for Pain Relief L Size: L-See Pictures for measurements Features: ---High elastic fiber cloth, fine texture, soft handle. ---Vented and breathable elastic side panels. ---Adjustable Neoprene double pull braces. ---Nano infrared thermal acupuncture dot matrix, heats quickly, with lasting effect. ---Magnetic therapy increases blood flow and helps relieve pain associated with joint and back problems. ---Magnetic heating effect helps to relax muscles and reduces fatigue. ---Supports the waist, maintains good posture Suitable for: ---People that have pain and stiffness with protrusion of lumbar vertebral disc, sciatica and / or lumbar hyperosteogeny. ---People whose waist need to keep warm with support.