The Calming Heat Back Wrap provides 3 therapeutic heat settings, 3 massaging vibrations, and 3 lumbar intensities for 27 relaxing combinations. Adjustable design with extender strap for a custom comfortable fit. * Back wrap for providing comfort and soothing backaches * 3 therapeutic heat settings, 3 massaging vibrations, and 3 lumbar intensities for 27 relaxing combinations * Massaging vibrations can be turned on and off * Inflatable lumbar support helps provide comfort & lower back support * Adjustable design, extender strap for a custom comfortable fit * USB port allows for use with any USB 5V 2A power pack (not included) for on-the-go or with a standard wall adapter (included) * Polyester * Wipe clean * Measures 9.25" L x 47.5" W x 2" H * Weighs 1.17 lb.