To make it possible that the hand is warmed as a whole, by preventing the fingers from getting cold, without deteriorating workability in outdoor handwork, while functions of the hand and the fingers are deteriorated by the cold of the fingers in the outdoor handwork in a cold period or in a cold district.

A disposable hand warmer is formed into a shape of the hand and has pockets for receiving finger tip parts, or the hand as a whole, on one of surfaces of the hand warmer or both the surfaces thereof, so that the hand warmer performs a warming function by a part corresponding to the back of the hand. A heating bag is positioned in the pockets so as to be contacted with the back of the hand, when the hand warmer is worn, by inserting the hand, or the fingers, thereinto. Further, finger parts of the heating bag formed into the shape of the hand are surely kept by finger parts of the pockets of the hand warmer, so that the finger parts of the heating bag are prevented from shifting. Therefore, the whole of the back of the hand is warmed, and simultaneously the palm of the hand scarcely has strange and uncomfortable feelings, nor is deteriorated in the workability.