Chuck using bags of frozen peas or ice packs that are too cold and have condensation! This hot and cold therapy pack has a soft, “Frost-Free” cover that conforms to your body. It is non-toxic with a biodegradable fill. It stays cold for the average recommended length of time for icing so there is no risk of frostbite. It can also be heated in the microwave and used as a heating pad. Helps relieve strains, sprains, tendonitis and other injuries.