The Black Split-Dual Back Ergonomic Swivel Office Chair with Fixed Armrests, model ERG-OFC-SPLITBACK-001, delivers balanced support and understated professional styling for regular work use. Its silhouette features a streamlined mid-back profile with clean, matte black finishes across all components, built on a nylon five-star base fitted with smooth PU casters for a polished, unobtrusive look that integrates seamlessly with a range of interior design schemes. Fixed curved loop armrests sit at a consistent height above the contoured seat, creating a cohesive visual line without protruding adjustment hardware that can clutter tight work areas. Construction prioritizes durability and consistent comfort over extended use. The backrest uses breathable black polyester mesh stretched over a fiberglass-reinforced polypropylene frame, structured as two separate upper back pads paired with an independent lumbar pad to support natural spinal alignment. The seat features a high-density cold-cured polyurethane foam core with 45 kg/m³ density, supported by a 12 mm thick plywood panel and wrapped in black woven fabric, shaped to reduce thigh pressure during full work shifts. The structure is reinforced with a 2.5 mm thick steel butterfly tilt plate, Class 3 chrome-plated steel pneumatic height adjustment cylinder, and injection-molded components for reliable long-term performance, with mesh upholstery rated for 50000 abrasion cycles, casters for 100000 rolling cycles, and a base static load rating of 1136 kg to support a maximum static user load of 150 kg. Total net weight is 18.4 kg, with overall dimensions of 655 x 720 x 1160 mm. Core practical functions support flexible work postures: a single under-seat lever controls 150 mm of pneumatic seat height adjustment to match standard 760 mm desk heights, with a separate tension knob regulating an 18-degree center-tilt rocking function, and a lever lock to secure the chair in the upright position or two intermediate reclined angles. The five dual-surface PU casters roll smoothly without scratching hard flooring or catching carpet fibers, while fixed contoured armrests provide steady forearm support during typing and administrative tasks. This chair is suited for a wide range of work settings, including corporate open-plan workstations, compact home office studies, meeting and conference rooms, shared coworking spaces, administrative task areas, and training rooms, where its swivel mobility and durable build support both focused individual work and collaborative group activity. For procurement teams, note that each unit ships across two cartons, with a packaged gross weight of 23 kg and reference assembly time of 40 minutes per set. Shipping logistics note a 20GP container holds 135 sets at 85% space utilization, suitable for bulk workspace fit-outs.