Thermoskin Lumbar Support Beige X-Lge XLarge 39.75 - 4.5 * When sizing measure around the middle of the waist * Provides pain relief and compression for muscle injuries and general lower back dysfunctions; injuries to the lumbar discs and the sacro-illiac joint * Has 2 internal flexible metal stays for support and adjustable elastic side straps * Captures body heat & increases blood flow * Allows skin to ventilated and release moisture * Shipping Carton Size: 12 L x 10 W x 6 H