Office style. The impressive Ray executive study chair is designed to stand out. The walnut finish combined with the classic black leatherette upholstery adds a touch of warmth to your office space. The backrest extends gently, allowing you to sit back comfortably. The headrest, curved, padded armrests and seat are ergonomically designed so you’re always at ease. The lock-tilt mechanism allows you to adjust the seat height, and lock the chair in position or unlock it and enable tilt. The torsion control knob allows you to adjust the tension of the springs in the chair to match your body weight. Tighten it for more resistance in the backrest. Bent plywood frame Lock-tilt mechanism–Single lever controls seat height, and locks the chairs in position, or allows tilt Torsion control knob Swivel chrome base Gas lift Nylon castor wheels Please refer to the images for dimension details Any assembly required will be done by the UL team at the time of delivery Indoor use only