Abstract: The invention relates to a lifejacket pouch in the form of a pocket (3), located beneath the scat surface of an aircraft seat, with wall pieces (17) which move relative to each other and which may be fixed in a position adjacent to each other along an opening edge (7) of the pocket (3), by means of a closure device which comprises at least a pair of retaining elements to generate a closing force acting between the wall pieces at the opening edge (7). Said elements may be overcome by means of a manually-operated tear-strip (13), for opening the pocket (3), comprising a tie strip (11), acting on the pair of retaining elements.