The High-Back Ergonomic Mesh Office Chair with Adjustable Headrest and Armrests, model EMOC-HB70-AH1, is an unbranded public seating solution built for consistent daily use. Its streamlined, modern silhouette features a tall contoured mesh back, padded fabric seat, and polished chrome five-star base, with a cohesive neutral finish that aligns with contemporary commercial and residential workspace design. The chair’s compact 650 x 700 mm footprint creates a balanced, unobtrusive layout that does not crowd surrounding work surfaces. Construction pairs durable, performance-focused materials for long-term reliability: the backrest uses high-tension breathable polyester mesh stretched over a glass-fiber reinforced polypropylene frame, while the seat core is 40 kg/m³ high-density molded polyurethane foam supported by a 13 mm thick plywood inner panel, upholstered in 0.8 mm thick wear-resistant polyester fabric. Armrests feature 20 mm thick PU foam padding on rigid PP supports, mounted to a structure anchored by a chrome-plated Class 3 steel gas lift and 1.5 mm thick chrome-plated steel five-star base, fitted with 65 mm diameter PU soft tread casters. Functional design prioritizes adaptable comfort for extended sitting: seat height adjusts across a 100 mm stroke via the gas lift, with 360-degree swivel accessible at all height settings. The backrest reclines to a 135-degree maximum angle, secured by a single-position tilt lock under the seat, paired with a user-adjustable tilt tension knob to tailor recline resistance to individual user weight. Armrests offer 100 mm of vertical height adjustment, while the headrest adjusts 50 mm in height and tilts 30 degrees to deliver targeted neck support, paired with a built-in contoured mesh lumbar zone that aligns to the natural lower back curve. The casters enable smooth omnidirectional rolling across surfaces, with mesh back tensile durability rated for 5 years and caster rolling durability rated for 100000 cycles, supporting a maximum user weight of 150 kg for users up to 1880 mm tall. This chair is suited for 8-hour daily use at open office workstations for administrative and knowledge workers, fits standard 760 mm height office desks and home desk setups, complements modern meeting room aesthetics, and delivers full upper back support for extended sessions in private manager offices. Its soft PU casters are compatible with hardwood, tile, and low-pile carpet floors. Procurement teams should note each unit ships in two cartons with a gross packaged weight of 22 kg, requires 40 minutes of assembly per set, and offers a 20ft container loading capacity of 212 units for bulk orders, with no branded supplier markup for flexible large-scale furnishing projects.