Abstract: The invention provides a container (1) comprising an outer receptacle (2) and, disposed therein, an inner receptacle (6) in the form of a bag; the bag being permeable to gases; the outer receptacle having a plurality of spacers (8) extending inwardly from an inner surface (9) thereof, and a plurality of vents (10) in the walls (9) of the outer receptacle (2); the spacers (8) serving to support the inner bag (6) such that it is spaced apart from the inner surface (9) of the outer receptacle (2); and the vents (10) serving to allow air to circulate between the bag (6) and the outer receptacle (2).