These reusable wraps are handmade on my 1913 Singer treadle machine. 100% cotton is used to make rice bags which hold heat or cold. The rice is scented with pure birch, cedar, petitgrain, and rosemary essential oils. The result is a slightly minty yet earthy fragrance. Birch essential oil is used to relax tension and for muscle and headache relief. Cedar has been known to reduce coughs and headaches and is another relaxing herb. Petitgrain is commonlyy used to balance emotions, reduce anxiety, is soothing and good for insomnia. Rosemary is best known as a memory-boosting essential oil, but it also helps muscle aches and decreases cortisol to aid in stress relief. The bags measure approximately 5" wide and 18" long and are filled with 2 pounds of food grade rice. They mold nicely to any contour to deliver heat or cold as well as relaxing aromatherapy. Throw it in the microwave for a minute or two and enjoy up to a half hour of relaxing heat. Great for achy joints, tired muscles, neck tension or menstrual cramps. Or, throw in the freezer to enjoy a cooling neck wrap or to apply cold to injuries. To keep the scent for as long as possible, we recommend keeping it in the recoverable bag it comes in so the oils do not evaporate when not in use. I'm always happy to discuss custom orders- convo me if you'd like a wrap made with different essential oils, or are looking for a different color or pattern. We offer a variety of healthy and natural body care products in our store including other varieties of these wraps!