A foldable table system for incorporation in a seat pan, the system comprising: a table (5) having a first end (51a) and a second end (51b), a table top surface (51) extending from the first end to the second end, and a table bottom surface (52) extending from the first end to the second end, and a lifting assembly (6) to which the table is attached, the lifting assembly expandable from a lowered position to a raised position as the table is raised from a stowed state to an open state, wherein the lifting assembly comprises: an upper bar (72) and a lower bar (71) extending essentially parallel to each other, the upper bar being attached to the table (5), and a pair of legs (73, 74) each having a first end (73a, 74a) connected to the upper bar (72) and a second end (73b, 74b) connected to the lower bar (71), the legs arranged to cross each other at a point (X) between the upper bar and the lower bar, and wherein one of the legs (73) has its first end fixedly connected to the upper bar (72) and its second end slidably connected to the lower bar, and the other of the legs has its first end fixedly connected to the lower bar and its second end slidably connected to the lower bar, such that as the upper bar is raised relative to the lower bar, the ends of the legs which are slidably connected slide along the respective bar towards the end of the opposite leg that is fixedly connected to that bar in a scissor motion.

A modular backrest structure. The backrest includes a back shell. The back shell is changed to customize the aesthetic of the seat. The backrest includes a beam. The back shell is coupled to the beam and adapters. The beam and adapters are configurable to multiple widths. The multiple widths of the allow for changing the back shell without changing the beam and the adapters. The beam and adapters provide a standardized attachment scheme to eliminate variations arising out of the different back shells.