Abstract: The invention relates to a seat (1) having a carrying frame (2) and a support unit (8) connected thereto, the support unit having a base frame (6) as well as an elastic cover (10) held thereon made of knitted fabric (11) as an unsupported structure, the cover (10) forming a support surface (9) having a seat region (13) and a back region (12) and being configured continuous between the seat region (13) and the back region (12). The support surface (9) of the cover (10) has a plurality of zones (33 to 38) located consecutively in the longitudinal direction of the cover, of which at least one zone (34) has a greater elastic deformability relative to the other zones (33, 35, 36, 37, 38). In a longitudinal edge region (41) of the knitted fabric (11) there is arranged on both sides of the seating region (13) always an additional strip-shaped edge section (43) of zone (34), having the greatest elastic deformability.