To provide an article which is manufactured by utilizing a fibrous truss structural material with significant qualitative advantages such as air permeability and pressure uniformity for the article and can function organically.

This article is one which utilizes a fibrous truss structural material E obtained by combining, in any appropriate number of layers, a corrugated laminar material (a) which is corrugated using a resin fiber and a plane laminar material (b) which is formed like a flat area and flatly spread along the projecting part of the corrugated laminar material (a). In addition, this fiber truss structural material E is attached directly to the surface of a seating means such as a chair or a bed, or with a cover.