ST Oyster High Back Multi Shift Executive Chair Adjustable seat height Adjustable back height (ratchet) (available in low back only) Adjustable seat and back angle Adjustable seat depth (seat slider) Adjustable arms Moulded seat foam Mesh back 4 lever ergonomic mechanism 700mm aluminium base Available in black only Minor assembly required Suitable for indoor use only 10 year warranty Weight limit is 140kg