Heat it up quickly in the microwave oven and place it where you need heat. The pillow is sown in a natural half linnen material that feels gentle against the skin. The wheat corns inside absorb heat and then release it slowly to your body.
If you need to cool down, place it in the freezer a while.
Never heat the wheat in a gas oven. It can not be washed in the machine - clean it off with a wet sponge or cloth. Don't use on an open wound or broken skin.