A re-configurable item of furniture comprises at least a first reconfigurable portion comprising in turn a plurality of deformable cells, each having electrically operated valves to control a gas inflow to the respective cells from a gas inflow source, and a gas outflow from the respective cells, to thereby modify the pressure within respective cells, wherein the gas inflow source comprises a high-pressure reservoir cell among the plurality of deformable cells, the item of furniture also comprising a control unit arranged to transmit control signals to a plurality of the electrically operated valves, including a valve of the high-pressure reservoir cell, to modify the pressure within a plurality of the cells in a coordinated manner selected to generate a new configuration of support for a user of the furniture.
