Leaving the arms off is a deliberate trade rather than a saving. Without them the chair slides completely under a table when it is not in use, which is the difference between a workspace that stays clear and one permanently half blocked, and it also leaves the elbows free to move rather than fenced between pads. What replaces that support is padding depth. The backrest carries 5.5 in of thickness across a 26.5 by 14.5 in panel, and the seat 6.5 in across 23.5 by 18 in, both filled thickly and finished in boucle with premium PU leather, a combination that is skin-friendly in contact and wipes down rather than marking. The backrest is inclined and curved rather than flat, and the seat is contoured to the natural shape of the body, so the two work together to hold a position without any armrest doing the work. Movement comes from a rocking backrest that reclines gently through a 12 degree range, tuned by a tilt tension control, and from a swivel seat that reaches different areas around a desk without the chair being dragged. Height sets between 22.5 and 27 in on a lever, running on an SGS certified gas rod for smooth lifting. A 5-claw metal base gives the footing and 360 degree universal wheels handle movement. The chair spans 27.5 by 24 in across and stands 36.5 to 41 in tall, carries a maximum 330 lbs and weighs 28.5 lbs in total. Assembly is required. Specification: Color: Brown & White; Material: PU Leather Boucle Foam Metal; Overall Dimensions: 27.5" x 24" x 36.5"-41"; Backrest Dimensions: 26.5" x 14.5"; Thickness of Backrest: 5.5"; Seat Dimensions: 23.5" x 18"; Thickness of Seat: 6.5"; Seat Height: 22.5"-27"; Rocking Angle Range: 12°; Max Load Capacity: 330 lbs; Net Weight: 28.5 lbs; Box Qty: 1