Abstract: A portable pressurized gas assembly which comprises a first panel structure; first looping pipe coil structure carried by the panel structure in overlying relation to the structure and having flexible construction, there being structure rigidly attaching the pipe coil structure to the panel structure at one side thereof; the looping coil structure having pressurized gas inlet and outlet fittings associated therewith, whereby the looping pipe coil structure may receive pressurized gas for transport by a user; the panel structure and pipe coil structure having an overall length dimension less than about 12 inches and overall width dimension less than about 9 inches.

Abstract: In a swim fin unit for use on the foot of a swimmer, the combination, comprises a body defining a foot receptacle, that opens endwise forwardly; first fin structure integral with and extending generally rearwardly of the body to be flexed upwardly and downwardly rearwardly of the body, by water pressure; and second fin structure integral with and extending generally vertically rearwardly relative to the body; said first fin structure defining a first plane and the second fin structure defining a second plane; the first and second planes intersecting in generally perpendicular relation.

Abstract: A clothing jacket carried pressurized gas assembly comprising a jacket back panel structure; first looping pipe coil structure carried by the jacket in overlying relation to the back panel structure and having flexible construction, whereby the coil structure and back panel structure may be conformed to the body of the wearer; the looping coil structure having pressurized gas inlet and outlet fittings associated therewith, whereby the looping pipe coil structure may receive pressurized gas for transport by the wearer.

Abstract: In a back pack pressurized gas assembly, the combination comprising a structure including a back panel sized to be carried on the back of a human carrier; looping pipe coils carried by the structure in overlying relation to the back panel, and in closely coiled configuration in a plane parallel to the back panel whereby the coil means and back panel structure may be conformed closely to the human back; the looping coil means having pressurized gas outlet structure associated therewith, whereby the looping pipe coils may receive pressurized gas for transport and use by the human.