A sculpture or other object made with a plastic or PVC film or fabric which achieves its intended form when filled with air or some other gas.Examples:Paolo Lomazzi, Donato D'Urbino and Jonathan De Pas, manufactured by Zanotta S.p.A., Italy, Blow Inflatable Armchair, 1967, polyvinyl chloride (PVC) plastic, inflated: 33 x 47 1/8 x 40 1/4 inches (83.8 x 119.7 x 102.9 cm), Museum of Modern Art, NY. See furniture.Jeffrey Shaw (Australian, 1944-), with Theo Botschuijver (Dutch), Waterwalk, 1969, air structure event, tetrahedron shaped balloon made from transparent (and sometimes colored) plastic, height 3 m. A watertight zipper allowed people to enter and be sealed inside. When this lightweight structure was inflated with air, one or more people could "walk on water" by stepping and rotating it like a wheel over the water surface. The large volume of air in the balloon allowed the occupants some time for their journeys ? and whenever they wished they could simply unzip themselves out. Lakes, rivers and the sea were the venues of what the artist calls an "eventstructure." See Happening and performance art.