There is disclosed a mouth piece, filter element or cooling element 100 comprising: a longitudinally extending core of filtering material 102; one or more channels 104 extending longitudinally from an end of the core 102; wherein the or each channel 104 has a non-circular transverse cross section which varies in the longitudinal direction by rotating about a longitudinal axis I of the mouth piece, filter element or cooling element 100.

A smoking article has a burn portion and a mouth portion. The burn portion includes a smoking rod filled with a smokeable filler material formed almost exclusively of cellulose material. The mouth portion includes either a filter portion with or without an interface or a tip with an interface. The mouth end may include an orthonasal property and the interface may store an additive.

An aerosol-generating article is provided, including an aerosol-generating substrate; and a mouthpiece disposed downstream of the aerosol-generating substrate, a peripheral region of the mouthpiece including one or more closed pockets of air.

An aerosol-generating article is provided, including an aerosol-generating substrate; and a mouthpiece disposed downstream of the aerosol-generating substrate, a peripheral region of the mouthpiece including one or more closed pockets of air.

A cigarette mouthpiece is described. Embodiments of the cigarette mouthpiece include cigarette mouthpiece made from a strip of flexible material having a varying width. A width of the strip of flexible material can help determine a length of a user engagement portion and a cigarette engagement portion of the cigarette mouthpiece. The cigarette mouthpiece can have a substantially circular cross-sectional shape and a diameter of the cigarette mouthpiece can be adjustable. Typically, an outside diameter of the cigarette engagement portion can be altered to fit into differently sized rolled cigarettes.

A cigarette mouthpiece is described. Embodiments of the cigarette mouthpiece include cigarette mouthpiece made from a strip of flexible material having a varying width. A width of the strip of flexible material can help determine a length of a user engagement portion and a cigarette engagement portion of the cigarette mouthpiece. The cigarette mouthpiece can have a substantially circular cross-sectional shape and a diameter of the cigarette mouthpiece can be adjustable. Typically, an outside diameter of the cigarette engagement portion can be altered to fit into differently sized rolled cigarettes.

Exemplary embodiments of the present disclosure are directed to a smoking article having a burn portion and a mouth portion. The burn portion includes a smoking rod filled with a smokeable filler material formed almost exclusively of cellulose material. The mouth portion includes either a filter portion with or without an interface or a tip with an interface. The mouth end may include an orthonasal property and the interface may store an additive.

Exemplary embodiments of the present disclosure are directed to a smoking article having a burn portion and a mouth portion. The burn portion includes a smoking rod filled with a smokeable filler material formed almost exclusively of cellulose material. The mouth portion includes either a filter portion with or without an interface or a tip with an interface. The mouth end may include an orthonasal property and the interface may store an additive.

A cigarette filter includes a mouthpiece, a filter, a connection member, a cigarette seat, and a filter cotton. The mouthpiece has an air duct. The filter is combined with the mouthpiece and has a first and a second containing spaces. The first containing space is connected with the air duct. The connection member has a first and a second connection portions in opposite to the connection member. The first connection portion is in the second containing space. The second connection portion is disposed out of the second containing space. The cigarette seat is fastened to the second connection portion and receives the cigarette. The filter cotton is removably disposed between the air duct and the first containing space. The removable filter cotton is porous and absorbs an oil liquid which improves flavor of smoke.

A cigarette filter includes a mouthpiece, a filter, a connection member, a cigarette seat, and a filter cotton. The mouthpiece has an air duct. The filter is combined with the mouthpiece and has a first and a second containing spaces. The first containing space is connected with the air duct. The connection member has a first and a second connection portions in opposite to the connection member. The first connection portion is in the second containing space. The second connection portion is disposed out of the second containing space. The cigarette seat is fastened to the second connection portion and receives the cigarette. The filter cotton is removably disposed between the air duct and the first containing space. The removable filter cotton is porous and absorbs an oil liquid which improves flavor of smoke.