HC715DSO- Made from organic cotton fleece, the Comfort Pac with Removable Cover provides 100% all natural aromatherapy. Our microwavable herbal pack gives hours of reusable, penetrating hot (or cold) therapy. The natural herbs & flax seed contour your body and help to relieve stress, tension, cramps and muscle discomfort. Microwave for instant heat therapy/chill for instant cold therapy. Hot or cold, our Comfort Pac can relax, rejuvenate and restore your body and soul.