The High Back Adjustable Headrest Mesh Ergonomic Office Chair with Fixed Armrests is a structured, functional unbranded seating solution built for consistent daily use. Its visual design balances understated professional styling with ergonomic structure: a tall grey mesh back rises to an aligned headrest, paired with a neatly tailored fabric seat, integrated loop-style fixed armrests, and a wide-spread five-star base with low-profile casters. The 680 mm base leg spread creates a stable, proportional footprint that avoids visual bulk in both open and compact spaces. Construction prioritizes durability and long-wearing comfort across all components. The backrest uses elastic polyester breathable mesh stretched over a grey polypropylene and fiberglass frame, with a contoured molded polypropylene lumbar support integrated directly into the frame structure to align with the natural seated spine curve. The seat is cushioned with high-density molded polyurethane foam wrapped in woven fabric upholstery, while armrests are fixed polypropylene loops attached seamlessly to the back frame to eliminate loose joints. The headrest features a matching breathable mesh pad on a rigid polypropylene support bracket. The base is injection-molded nylon, fitted with 60 mm black nylon dual-wheel swivel casters, and connected to the seat via a black powder-coated Class 3 steel gas lift and 2 mm thick steel butterfly tilt and lock chassis. Key performance ratings support heavy regular use, including a maximum recommended user weight of 150 kg, 50,000 cycles of backrest mesh abrasion resistance, and 100,000 cycles of durability for both casters and gas lift. The chair delivers a full suite of adjustable ergonomic functions to support varied seated needs: a right-side lever controls 360-degree swivel seat height adjustment, with total travel supporting seat heights up to 720 mm. The headrest offers vertical height adjustment up to 190 mm with fixed angle positioning to cradle the neck for users up to 185 cm tall. The backrest reclines from 90 to 120 degrees with a single-position lock, paired with an under-seat rotary tension knob to customize recline resistance for individual preference. The full 360-degree base rotation and smooth dual-wheel casters enable easy movement across both hard flooring and carpeted surfaces, while fixed armrests positioned 180 mm above the seat provide steady upper body support during typing or discussion. This chair is suited for a wide range of work environments. It is designed for 8-hour daily seated work at corporate open office workstations paired with standard 760 mm desks, fits compact home office workspaces thanks to its narrow 680 mm footprint, supports easy movement and repositioning in conference and meeting rooms during collaborative sessions, and offers the stable support needed for general office administrative tasks. It is also compatible with 2.4 m executive desk setups for private office use. For procurement teams, key logistical details simplify planning: each chair ships in two cartons, with a packaged gross weight of 23 kg per set and total carton volume of 0.26 m³ per set.