For backaches, sprain, muscular & joint pains, abscesses,women related pains (Under the guidance of Gynaecologist). 4 layers of insulation on either side for complete comfort & safety.In-built twin thermostat for 100% safety.Ultra soft washable cotton cover.Velcro strap-on belt.Three convenient sizes.Flexible-can be used on any afflicted area.Imported long-lasting heating coil. Size: 24 cm X 18.5 cm (9.5 X 7.25 inches)