According to the function, warmer can be divided into body warm, uterus warmer, hand warmer, foot warmer and mini warmer.
Body warmer: it can stick to the any parts of body;
Uterus warmer: it mainly used in female;
Hand warmer: warm your hand;
Foot warmer: stick on the shoe sole to warm your feet;
Mini warmer: it can stick in the parts of each joint.