 This is similar to silicate-gel hot packs, except hot packs start to lose heat at 15–20 minutes, whereas the portable heat wraps maintained their heat for the entire 90 minute application.In a 2004 Journal of Orthopaedic & Sports Physical Therapy study, ThermaCare HeatWrap is compared with the Johnson & Johnson Back Plaster, and the ABC
Warme-Pflaster.In 2008, the Medical Science Monitor also published a research paper on the ThermaCare heat wrap.