Bag for the storage and transport of a pulverulent product and method of filling the same

A bag for the storage and transport of a pulverulent product comprising a bottom part, a sidewall and an upper part joined together to form a storage volume, wherein the upper part is provided with a filler inlet or opening configured to allow the pulverulent product to be introduced inside the storage volume of the bag during a filling operation, wherein the bag further comprises lifting straps provided in an upper portion of the bag, wherein the bag further comprises at least one elongated section made of an air-permeable material and extending inside the storage volume of the bag, which elongated section is an integral part of the bag and comprises an outlet accessible from the outside of the bag, the elongated section acting as an integrated filter member and being configured to allow insertion of an elongated air-extraction member of an air-extraction system, inside the elongated section, so as to extract air directly from inside the storage volume of the bag during the filling operation.