a packaging device includes first and second thermoplastic films superposed with each other , wherein predetermined portions of the thermoplastic films are bonded creating a plurality of fluid containers , a plurality of check valves each connected to a corresponding fluid container , a fluid passage in a first direction connected to the check valves , and a second border between an inflated section including the plurality of fluid containers and an uninflated section , wherein the first and second thermoplastic films are folded and two side edges of the films are bonded and a first portion of a first border connecting the inflated section to a second section is folded and an overlapped portion of the first portion is bonded leaving a remaining portion of the first border unbonded wherein the uninflated section forms a loop , and wherein the uninflated section forming the loop is folded into the inflated section to form a lining .