... or alleviate arthritis, waist or leg pains or stomachache. ♥ Suitable for the promotion gift. It is convenient,economical and practical. ♥ Welcome ... wrap it by towel, and put it into boiling water for around 5-10minutes, until the inside solid become liquid again ... rheumatism, arthritis, scapulohumeral periarthritis, stomachache, dysmenorrhea and so on. baby bottle warmer moist reusable heating pack