... body cooling, sprains, minor burns, etc., or local hot compress on body to reduce pain, alleviate fatigue, etc. ... body cooling, sprains, minor burns, etc., or local hot compress on body to reduce pain, alleviate fatigue, etc. ... 20°C)for at least 15 minutes before use.Hot application: Immerse pack in water container then into microwave ... into boiled water for 5 minutes before use. Hot Cold Shoulder Pad