A food packaging, including: - a welded cover composed of a lower plastic film and an upper plastic film distinct and separate from said lower plastic film, said upper and lower films having thicknesses and being composed of materials such as to be collapsible, and being welded together at respective perimeter edges (10a, 11a) so as to define a perimetral sealing and a watertight internal housing; - a non-collapsible tray inserted in said closed internal housing, detached from said lower film and said upper film, trapped in said sealed housing, said tray being configured to house the food product and to support its weight, said tray having a bottom and raised edges in respect to the bottom and having a nominal height and defining together a containment volume of the food product inside the tray; wherein said sealed housing is filled with a modified atmosphere suitable for food packaging; wherein said lower plastic film is thermoformed to contain said non-collapsible tray so that the internal sealing housing has a volume corresponding to the containment volume of the tray with the thermoformed lower plastic film wrapping an outer surface of the tray, the upper plastic film being configured to remain suspended above the bottom of the tray; characterized in that said lower plastic film has a thickness of between 20 micrometers and 140 micrometers, and said upper plastic film has a thickness of between 20 micrometers and 80 micrometers; said upper and lower films having thicknesses and being composed of materials such as to be creased and crumpled with bare hands into a ball or folded as a paper tissue; the upper plastic film is configured to lie on the edges of the tray and to be sustained by the raised edges of the tray. - a welded cover composed of a lower plastic film and an upper plastic film distinct and separate from said lower plastic film, said upper and lower films having thicknesses and being composed of materials such as to be collapsible, and being welded together at respective perimeter edges (10a, 11a) so as to define a perimetral sealing and a watertight internal housing; - a non-collapsible tray inserted in said closed internal housing, detached from said lower film and said upper film, trapped in said sealed housing, said tray being configured to house the food product and to support its weight, said tray having a bottom and raised edges in respect to the bottom and having a nominal height and defining together a containment volume of the food product inside the tray; wherein said sealed housing is filled with a modified atmosphere suitable for food packaging; wherein said lower plastic film is thermoformed to contain said non-collapsible tray so that the internal sealing housing has a volume corresponding to the containment volume of the tray with the thermoformed lower plastic film wrapping an outer surface of the tray, the upper plastic film being configured to remain suspended above the bottom of the tray; characterized in that said lower plastic film has a thickness of between 20 micrometers and 140 micrometers, and said upper plastic film has a thickness of between 20 micrometers and 80 micrometers; said upper and lower films having thicknesses and being composed of materials such as to be creased and crumpled with bare hands into a ball or folded as a paper tissue; the upper plastic film is configured to lie on the edges of the tray and to be sustained by the raised edges of the tray. wherein said sealed housing is filled with a modified atmosphere suitable for food packaging; wherein said lower plastic film is thermoformed to contain said non-collapsible tray so that the internal sealing housing has a volume corresponding to the containment volume of the tray with the thermoformed lower plastic film wrapping an outer surface of the tray, the upper plastic film being configured to remain suspended above the bottom of the tray; characterized in that said lower plastic film has a thickness of between 20 micrometers and 140 micrometers, and said upper plastic film has a thickness of between 20 micrometers and 80 micrometers; said upper and lower films having thicknesses and being composed of materials such as to be creased and crumpled with bare hands into a ball or folded as a paper tissue; the upper plastic film is configured to lie on the edges of the tray and to be sustained by the raised edges of the tray.