Abstract: An inflatable bag comprising a peripheral side wall having a pluraity of inflatable cells of flexible sheet material surrounding a storage cavity, and end walls to enclose each opposite end of the cavity, which end walls similarly include an inflatable cell of flexible sheet material. An opening is provided for entrance into the storage cavity, which opening includes means to open and close such as by means of a zipper. Air valves are provided for inflating and deflating the inflatable cells of the peripheral side wall and the inflatable cells of each end wall. When the inflatable cells of the peripheral side wall are inflated with air, the rigidity of the peripheral side wall increases to support the peripheral wall at points around the periphery which are spaced apart from the longitudinal axis of the storage cavity. The cells of the end wall are similarly inflated to provide rigidity and support for each end wall.

Abstract: An inflatable box of resilient sheet material such as rubber or vinyl, comprising a plurality of inflatable panels integrally joined along fold lines to provide a bottom wall, side walls and a top wall which may also function as an openable cover. The box may be made water-tight by providing non-inflatable folds or webs of waterproof material integrally joining each side panel to the side panels adjacent thereto along their respective adjoining edges. An air valve is provided in one of the inflatable panels to introduce air under pressure in that panel, and into the other inflatable panels through connecting passageways. The panels are inflated when they are lying flat. They are then folded along fold lines to form the box, and the panels are held in such position by side wall fasteners. A fastener may also be provided on the top cover panel to hold it in closed position.