Symmetrical object i.e. cushion, and seat aspect changing device for armchair, has covers arranged one on another, where each cover is folded into two on level of axis of symmetry, so that left corners are superimposed on right corners

摘要

The device has covers i.e. black and white covers, arranged one on another, where covers are identical. Each cover is perfectly folded into two on the level of the axis of symmetry, so that the left corners are superimposed on the right corners. The covers with single aspect are assembled so that the covers make a reversible cover with different aspects.