Original Bed Buddy Hot & Cold Packs are convenient, easy to use for therapeutic moist heat or cold applications. These reusable hot and cold packs are filled with all natural grains. Put them directly in the microwave and heat for moist heat therapy. These effective hot and cold compresses are available in different sizes for a variety of applications. Cold packs and hot packs effectively help treat muscle strains, sprains, tendonitis, and other muscular injuries.