Aromatherapy Herbal Packs Heat & Cold Jumbo Packs are filled with essential oils of 12 healing herbs and the highest quality Wheat available to help soothe stress and muscle pain when used hot. Great for muscle aches and pain in your upper and lower back, upper legs, lower legs, stress and tension in your shoulders and neck. 100% all natural aromatherapy to help relieve stress, tension, cramps and muscle discomfort. Also works well as a cold compress to help relieve pain associated with strains, swelling and inflammation, helps to reduce fever, provides relief to sunburn, hives and so much more.