8-Hour Heat Wrap Back/Hip, 2 ct, QC95789 Sale! This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. Compare to Thermacare. Provides temporary relief of minor muscular, joint aches and pains associated with overexertion, strains, sprains and arthritis for back and large areas. 8-Hour relief. Long lasting penetrating heat. Ultra-thin, air-activated single use pad.