Item of luggage provided with a vacuum storage bag

An item of luggage comprising a shell composed of a first half-shell and a second half-shell, the first and second half-shells being pivotingly mounted to each other, the item of luggage comprising:

• a closing device for holding the first and second half-shells against each other so as to close the shell,
• at least two casters, each of the casters being mounted on a support, the first half-shell comprising two housings for taking up the caster supports,
• a vacuum storage device placed in the first half-shell, the vacuum storage device comprising a bag having a main compartment fitted with an opening, a sealing device for sealing the main compartment, and a non-return valve arranged so as to block the air intake in the main compartment and allow air to exit from the bag when the main compartment is sealed, and
• a fastening device for detachably fastening the vacuum storage device to the first half-shell, the fastening device comprising a first fastening member and a second fastening member, the first half-shell comprising the first fastening member while the vacuum storage device comprises the second fastening member, the first and second fastening members being arranged to cooperate with each other so as to attach the storage device to the first half-shell;
• wherein the vacuum storage device further comprises a stiffening plate, said stiffening plate comprising a body and at least one first end section which is inclinable relative to the body, wherein the second fastening member comprises the first end section, and in that wherein the first fastening member comprises at least one first holding element cooperating with the first end section so as to maintain the stiffening plate relative to the first half-shell.