TherMedic Pro-Lite Wrap PW140L - infrared heating pad heating pad neck shoulder (hot therapy blanket / thermal blanket / neck heating) (Health and Beauty)
A normal neoprene kidney belt warms slightly less. Compared with a hot water bottle or the usual bog cushion the thing is a joke (16 watts of power, not surprisingly). In addition, ranging the length of the belt only for petite and normal lean people