Segmented smoking article with insulation mat

A cigarette comprising:

• a lighting end and a mouth end;
• a smokable segment disposed at the lighting end, said smokable segment having a length and comprising a smokable material circumscribed by wrapping material;
• a mouth end piece segment disposed at the mouth end;
• an aerosol-generation system disposed between the smokable segment and the mouth end piece segment, the aerosol-generation system including
• (i) a heat generation segment adjacent to the smokable segment, said heat generation segment having a length and including a heat source configured to be activated by combustion of the smokable material and an insulation Layer of flame-retardant material that comprises non-glass viscose rayon material that is woven, knit or a combination thereof, and . . .
• (ii) an aerosol-generating segment incorporating aerosol-forming material, said aerosol-generating segment having a length and being disposed between, but physically separate from, each of the heat generation segment and the mouth end;
• a piece of outer wrapping material oriented to provide an overwrap (i) around the aerosol-generating segment for at least a portion of its length, (ii) around the heat generation segment for the length of that segment, and (iii) around the smokable segment for at least a portion of its length;
• those segments being connected together by the overwrap to provide a cigarette rod;
• and
• the mouth end piece segment being connected to the cigarette rod using tipping material.