Eco-sustainable container

An eco-sustainable container for fluid products, comprising:

• an outer shell made of cellulose-based material and having an inner surface and at least one through opening having an inner edge,
• at least one sealed flexible bag of polymer material containing a fluid product, the at least one sealed flexible bag being housed within the outer shell and having an outer surface facing said inner surface of the outer shell,
• wherein a portion of the outer surface of the sealed flexible bag is joined to a portion of the inner surface of the outer shell along a joining path surrounding the inner edge of a corresponding through opening,
• wherein said portion of the outer surface is enclosed by said joining path and is configured to be pierced by an access port member when the access port member is inserted through said through opening of said outer shell,
• wherein the outer shell forms a bulged socket integral therewith and made of a same cellulose-based material, and
• wherein the bulged socket includes a bulged portion sticking out of and raised above an outer surface of a portion of the outer shell adjacent to the bulged socket, and a recessed portion inside the bulged portion, the recessed portion extending in an opposite direction as the bulged portion into an inside area of the eco-sustainable container and terminating at a bottom which is recessed below inner and outer surfaces of the portion of the outer shell adjacent to the bulged socket, the through opening being provided in the bottom of the bulged socket.