A respiratory half mask for filtering breathing air of a wearer of the respiratory half mask, a) having a respiratory half mask body, which comprises i. a flexible basic part for covering the mouth of the wearer, ii. two side fields, which are situated opposite one another and are fixed in a folded-over position to the basic part upon forming head holding means receptacles for receiving at least one head holding means for holding the respiratory half mask body on the wearer, iii. a flexible nose part which is fixedly connected to the basic part for covering the nose of the wearer, wherein the nose part - is foldable in relation to the basic part between a nose part wearing position and a nose part storing position, and iv. a flexible chin part which is fixedly connected to the basic part for covering the chin of the wearer, wherein the chin part - is foldable in relation to the basic part between a chin part wearing position and a chin part storing position, characterized in that - the nose part comprises at least two, in particular edge-side, nose part part-recesses for preventing the folded-over side fields fixing to the nose part upon fixing the side fields to the basic part, and - the chin part comprises at least two, in particular edge-side, chin part part-recesses for preventing the folded-over side fields fixing to the chin part upon fixing the side fields to the basic part. a) having a respiratory half mask body, which comprises i. a flexible basic part for covering the mouth of the wearer, ii. two side fields, which are situated opposite one another and are fixed in a folded-over position to the basic part upon forming head holding means receptacles for receiving at least one head holding means for holding the respiratory half mask body on the wearer, iii. a flexible nose part which is fixedly connected to the basic part for covering the nose of the wearer, wherein the nose part - is foldable in relation to the basic part between a nose part wearing position and a nose part storing position, and iv. a flexible chin part which is fixedly connected to the basic part for covering the chin of the wearer, wherein the chin part - is foldable in relation to the basic part between a chin part wearing position and a chin part storing position, characterized in that - the nose part comprises at least two, in particular edge-side, nose part part-recesses for preventing the folded-over side fields fixing to the nose part upon fixing the side fields to the basic part, and - the chin part comprises at least two, in particular edge-side, chin part part-recesses for preventing the folded-over side fields fixing to the chin part upon fixing the side fields to the basic part. i. a flexible basic part for covering the mouth of the wearer, ii. two side fields, which are situated opposite one another and are fixed in a folded-over position to the basic part upon forming head holding means receptacles for receiving at least one head holding means for holding the respiratory half mask body on the wearer, iii. a flexible nose part which is fixedly connected to the basic part for covering the nose of the wearer, wherein the nose part - is foldable in relation to the basic part between a nose part wearing position and a nose part storing position, and - is foldable in relation to the basic part between a nose part wearing position and a nose part storing position, and iv. a flexible chin part which is fixedly connected to the basic part for covering the chin of the wearer, wherein the chin part - is foldable in relation to the basic part between a chin part wearing position and a chin part storing position, - is foldable in relation to the basic part between a chin part wearing position and a chin part storing position, - the nose part comprises at least two, in particular edge-side, nose part part-recesses for preventing the folded-over side fields fixing to the nose part upon fixing the side fields to the basic part, and - the chin part comprises at least two, in particular edge-side, chin part part-recesses for preventing the folded-over side fields fixing to the chin part upon fixing the side fields to the basic part.