Thermophore Moist Hot Packs are the moist hot packs most prescribed by doctors. It is electric and can be used instantly and for as long as you need relief. Moist heat increases circulation and speeds recovery by bringing in fresh blood cells and taking away the wastes which hinder healing. These beneficial results continue for several hours after treatment. The moisture produced by the Thermophore Hot Pack transfers the high heat deeper into tissues than an ordinary dry heat pad.