ST Oyster Multi Shift Low Back Task Chair Adjustable seat height Adjustable back height (ratchet) Adjustable seat and back angle Adjustable seat depth (seat slider) Adjustable arms Available in high, medium and low back 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