The flexible range of IS stacking, conference and guest chairs are available in a variety of options. Frames include cantilever or four legged. Back are either with injection moulded or fully upholstered and arm can be specified. Seats are also fully upholstered & have an under seat shroud as standard that protects the upholstery when the chairs are stacked. The shroud also encloses the retractable linking devices on the four leg chairs. Both four legs and cantilever stack five high, trolley enable stacking 10 high. There is also a writing tablet option.