1.Seat/Back foam: Soft and comfortable moulded foam with strong restoring function.Seat foam density is 50kg/m3, the back foam density is 45kg/m3. 2.Seat/Back shell: 18mm High pressure plywood with active wood veneer lacquer. 3.Armrest:Premium wood armrest,painted. 4.Stand:Single pedestal base support helps for air circulation and easy cleaning. 5.Seat reposition:gravity balanced mechanism. 6.Fabric:1.premium various cloth 2.Genuine leather. 3.Artificial leather. 7.Writing Pad:folded one with MDF board,painted or melamine.