Sunbeam Back Contouring Heating Pad in Grey with Lumbar Support provides soothing back relief with customized contouring system for maximum heat transfer. Advanced airflow system allows for firmness adjustment to provide better back support and more targeted heat therapy to increase blood flow for muscle relaxation and to assist with faster healing. Lower back ache relief is at your fingertips with four heat settings to provide the level of intensity you need to begin feeling better. Self inflates for customized fit, Contoured for maximum heat transfer, Personalized lumbar support, 4-heat settings, 30-minute auto-off; Soft, removable, machine washable cover.