The armchair has a lower block (1), forming the seat, and an upper block (2), forming the back, which is above the upper horizontal plane of the seat. The back is articulated along a geometric line (A-A) along the top of the seat and pivots forwards to form a parallelepiped pouffe. The back and seat are triangular foam blocks, covered with fabric, whose dimensions are identical. The seat has a central projecting part (4) whose upper surface forms the seat. The back of the seat is defined by the curved wall (6) of a hollow (7) in the back.
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