FUEL TANK AND VEHICLE COMPRISING SAME

A fuel tank according to an embodiment of the present invention may comprise: a first recessed member which is recessed on one side thereof to form a receiving space, is open at the other side thereof, and has a first flange part formed on the open side thereof, the first flange part being bent to partially cover the receiving space; and a second recessed member which is connected to the first recessed member on the other side of the first recessed member to form a hermetically closed space, is open on one side thereof, has a second flange part on the open side thereof, and is recessed on the other side thereof to form a receiving space, the second flange part being bent to partially cover the receiving space.