Think of all those folks with sciatica in the winter time..... Damn no more roll ons: Patches Ointments Creams Stretch machines Ass shocking machine Chiropractors ( well lesson the visits) If anyone want to add to the list feel free lol Come on all you sciatica people, you know what I am talking about. Just have your lady or dude ( TIME MACHINE) ya.... wooot wooot!!!! Ha ha ha ha Incisions, inflammatory pill urgh.. By introducing a nice amount of heat.. oh la la. 35 degree Celsius = 95 degrees farenheight in the winter time holy cows.... that's a perfect hot hot heat for the lower back.