TOBACCO SMOKE FILTER

A tobacco smoke filter or filter element comprising a longitudinal extending core which includes tobacco smoke filtering material; and an outer wrapper engaged around the longitudinal extending core; wherein the longitudinal extending core includes a downstream element comprising a longitudinally extending downstream core of tobacco smoke filtering material; a first inner wrapper engaged around the downstream core; and optionally a second inner wrapper engaged around the first inner wrapper; the first inner wrapper having a profiled (e.g. corrugated) outer surface which defines with the second inner wrapper or the outer wrapper at least one longitudinally extending channel; and wherein the downstream end of the outer wrapper extends beyond the downstream end of the core around which is engaged, to define a cavity at the downstream end of the filter.