This non-toxic and non-caustic gel bag can be used as a hot or cold compress. 1. ... This warmer is a new-style hot water bag.It is made of special material, It can keep warm ... .It can ease pains such as arthritic, toothache, arthritis, headache, back and neck pain, chilblain. 3.The product is suitable for ... 60-70 degrees, it will automatically switch off. Hand warmer bag DE-285