A breathing protective device comprising a tubular elongated filter housing (8) defining at least one wall (81) between a first end (5) and a second end (7), said wall (81) having at least one opening (82), a filter (2) in the filter house (8) and a mouthpiece (9) having an air canal (51) with an opening (54) arranged to be introduced into and held in the users mouth whereby said filter house (8) extends parallel to a line between the corners of the users mouth, said air canal (51) being in communication with at least one space (80, 83) within said housing for filtered inhalation air and exhalation air respectively, and wherein either the filter (2) or the filter (2) with the housing (8) is disposable, wherein said filter (2) is arranged to separate a first space (80) from a second space (83) and in that said air canal (51) is arranged to enable supply of inhalation air from said first space (80) via said filter (2) and to enable exhalation air to escape via said opening (82) from said second space (83). WO2008063126A1
