Chair, comprising a seat having a seat shell, and a frame for supporting the seat, wherein the frame comprises, on its side facing the seat, at least one fastening strut running parallel to the plane of the seat shell; an underside of the seat shell facing the frame comprises a receiving profile for receiving at least a part of the fastening strut of the frame; the receiving profile comprises a fastening section (23, 25) which runs from a circumferential edge of the seat shell parallel to the plane of the seat shell into the interior of the seat shell, and has an access opening at the circumferential edge of the seat shell; and there is provided a clamping strip (30, 31) for clamping the fastening strut in the fastening section (23, 25) of the receiving profile of the seat shell, which is insertable into the fastening section (23, 25) from the access opening of the fastening section (23, 25) at the circumferential edge of the seat shell on a side of the fastening strut of the frame facing away from the seat shell in a direction parallel to a longitudinal direction (24, 26) of the fastening section, and is fixed in an end position of the clamping strip (30, 31) in the fastening section (23, 25) in a direction perpendicular to the plane of the seat shell, characterised in that the fastening section (23, 25) of the receiving profile comprises a first latching element, and the clamping strip (30, 31) comprises a second latching element which engages with the first latching element on the fastening section (23, 25) in the end position of the clamping strip (30, 31) in the fastening section (23, 25) to latch the clamping strip (30, 31) in the longitudinal direction (24, 26) of the fastening section (23, 25). the frame comprises, on its side facing the seat, at least one fastening strut running parallel to the plane of the seat shell; an underside of the seat shell facing the frame comprises a receiving profile for receiving at least a part of the fastening strut of the frame; the receiving profile comprises a fastening section (23, 25) which runs from a circumferential edge of the seat shell parallel to the plane of the seat shell into the interior of the seat shell, and has an access opening at the circumferential edge of the seat shell; and there is provided a clamping strip (30, 31) for clamping the fastening strut in the fastening section (23, 25) of the receiving profile of the seat shell, which is insertable into the fastening section (23, 25) from the access opening of the fastening section (23, 25) at the circumferential edge of the seat shell on a side of the fastening strut of the frame facing away from the seat shell in a direction parallel to a longitudinal direction (24, 26) of the fastening section, and is fixed in an end position of the clamping strip (30, 31) in the fastening section (23, 25) in a direction perpendicular to the plane of the seat shell, characterised in that the fastening section (23, 25) of the receiving profile comprises a first latching element, and the clamping strip (30, 31) comprises a second latching element which engages with the first latching element on the fastening section (23, 25) in the end position of the clamping strip (30, 31) in the fastening section (23, 25) to latch the clamping strip (30, 31) in the longitudinal direction (24, 26) of the fastening section (23, 25).