Circular waterbed

A circular waterbed comprising a soft endless flexible band of material of minimal stretchability, unfoldable from a relaxed condition to a circle having a predetermined diameter, and a circular inflatable bag of a diameter in its uninflated condition, exceeding that of said flexible band in its unfolded condition, said circular inflatable bag being installed within said band and inflated, whereby, because of said diameter relationship, internal pressures developed in said bag when inflated, will cause said bag to stiffen and rigidify said flexible band of material of minimal stretchability.

A method of fabricating a substantially circular waterbed comprising forming an endless band of non-rigid material of minimal stretchability having a predetermined diameter when unfolded from a folded or collapsed condition to a circular form, forming a circular inflatable bag having a diameter in its uninflated condition, exceeding that of said band in its unfolded condition, installing said bag in its uninflated condition within said band of non-rigid material of minimum stretchability, and inflating said bag to substantially uniformly transit internally developed pressure to said band to stiffen and rigidify the same.