Model number: T854 Size:Standard Chair Cover Material: Mesh Fabric Arm Type : Adjustable 2D Mechanism Type :Multi-functional tilt with 3 level locking Gas Lift: 80mm TUV approved Base :R340mm Nylon Base Casters : 60mm Caster/PU Frame: Nylon Foam Type: Molded foam Adjustable Back Angle :135° Adjustable Headrest :Yes