Chair

A back portion for a chair comprising:

• a back frame, the back frame comprising a lower portion adapted to extend across at least a major part of a lower region of a seated adult occupant's back, an upper portion vertically spaced from the lower portion and adapted to extend across at least a major part of an upper region of the occupant's back, and a relatively narrow interconnecting region between the upper portion and lower portion, wherein the relatively narrow interconnecting region is resiliently flexible to provide a flexing movement in a rearward direction of the upper portion relative to the lower portion;
• and a cover operatively connected to the back frame to provide a supporting surface for the back of the seated occupant.

A back portion for a chair comprising:

• a lower portion adapted to extend across at least a major part of a lower region of an adult occupant's back;
• and an upper portion adapted to extend across and support at least a major part of an upper region of an adult occupant's back;
• wherein the upper portion comprises an upper section that is adapted to be selectively folded rearwardly relative to a remainder of the upper portion, to reduce the overall vertical height of the back portion.

A method as claimed in 63, wherein said dimension is a longitudinal dimension, and the method is such that the generally longitudinally extending elongate members are stretched and then relaxed as the cover is stretched and relaxed.