A face mask comprises tab parts at the opposite positions on substantially upper side of the face shape thereof. The face mask has a foldable structure which can be easily developed by folding the mountain-folding parts and valley-folding parts so that both of the parts are alternately arranged in the lateral direction of the face of a user, and further folding the parts in the direction generally orthogonal to the folding lines so as to project the tab parts outward.
