The Medium-Back Upholstered Executive Swivel Chair, model EXEC-MB-WHL-660, presents a tailored executive seating form with a light beige seat and back, integrated curved arm loops, and a polished chrome-plated five-star base. Its upholstered shell follows a structured medium-back silhouette, with tailored perimeter seams on the seat, visible seam returns where the arms join the seat and back, continuous side bolsters, and a recessed lumbar zone. Black twin-wheel casters, a chrome gas lift, and a black steel under-seat tilt mechanism provide visual contrast while supporting a conventional office-chair layout. Overall dimensions are 660 by 680 by 990 millimeters, with 540 millimeters of clear width between armrests and fixed arm support 220 millimeters above the seat. The seat uses a 90-millimeter padded foam cushion over a load-bearing shell, with listed seat foam density of 45 kilograms per cubic meter. The back panel provides 70 millimeters of padding over a 240-millimeter lumbar support zone, with listed back foam density of 35 kilograms per cubic meter and 40 percent indentation rebound. Internal construction may include a 12-millimeter molded plywood or reinforced polymer seat shell, with a 20-millimeter steel-tube or reinforced polymer back frame. The five-star base is polished chrome-plated die-cast or steel with five tapered spokes. Exact cover material and material grade require supplier bill-of-materials confirmation. Functionally, the chair offers full 360-degree swivel, pneumatic height adjustment through a 100-millimeter Class 4 gas-lift stroke, and synchronized seat-and-back tilt with 12-degree rearward recline travel. A single-position lock secures the upright posture, while an under-seat rotary knob controls tilt tension. The contoured lower-back channel supplies passive lumbar support, and the closed upholstered arm loops offer fixed forearm support. The recommended user weight capacity is 135 kilograms, and chair net weight is 17.5 kilograms. This model is suited to executive offices, private workstations, meeting rooms, reception or interview areas, and hotel business centers. It complements desks 760 millimeters high and workstations with 600-millimeter knee clearance where rolling mobility is needed. Procurement teams should allow for two cartons per set, 40 minutes of assembly time, and batch inspection of upholstery consistency and chrome-base finish, particularly for orders of 10 or more. Container planning can reference 172 chairs for a 20GP and 420 chairs for a 40HQ, with packaged gross weight of 23 kilograms per set.