... hour before taking out for use. Hot compress: put the cold/hot bag into microwave oven to be ... hemorrhage, heatstroke, itch, headache, strain, scald, fatigue. Hot compress:alleviate rheumatic pain, neural pain, sciatica, vertebral pain, ... it should be better to enwrap the cold/hot bag with a tower or cotton cloth to ... can either be used for cold and for hot with a simple usage. The bag remains soft ...