Dear Sir Madam, Material:Fabric Folded:No Style:Swivel Chair,Executive Chair,Mesh Chair,Lift Chair After-Sales Service:5 years Base:310MM Nylon or Chrome base Color:optional Mechanism:Swivel tilt Seat:Seat up and down adjustable Armrest:Fixed PP armrest Back Shell:Nylon Castor:50mm nylon Gaslift:120mm Net cloth:According to customer's requirement .