A cooling bag according to various aspects of the present technology comprises a main body configured to form an interior receiving section. The main body may comprise front and rear panels and a bottom panel extending between the front and rear panels. At least one of the front, rear or bottom panels comprises a multi-layer structure comprising an external fabric layer; an interior liner; and a plurality of intermediate insulating layers disposed between the external fabric layer and the interior liner. The multi-layer structure may further comprise at least one air gap disposed between at least one intermediate insulating layer. A cooling sleeve may be disposed within the interior receiving section. The cooling sleeve may divide the interior receiving section into a front receiving section and a back receiving section. The cooling sleeve may be configured to receive a cooling element.

A cooling bag according to various aspects of the present technology comprises a main body configured to form an interior receiving section. The main body may comprise front and rear panels and a bottom panel extending between the front and rear panels. At least one of the front, rear or bottom panels comprises a multi-layer structure comprising an external fabric layer; an interior liner; and a plurality of intermediate insulating layers disposed between the external fabric layer and the interior liner. The multi-layer structure may further comprise at least one air gap disposed between at least one intermediate insulating layer. A cooling sleeve may be disposed within the interior receiving section. The cooling sleeve may divide the interior receiving section into a front receiving section and a back receiving section. The cooling sleeve may be configured to receive a cooling element.