Abstract: An upholstery furniture item comprising a casing of flexible non-air permeable material filled with a spherical beads of expanded polystyrene that flow around the body of a person seated in the item to closely follow the contours of the body as described earlier. In the bottom of the casing is an airtight inflatable air chamber for compensating for volume changes that arise from the crushing or abrading of the beads after repeated uses. Flexible elastic members are provided to help the furniture item retain its shape.