The Ergonomic Mesh High-Back Swivel Office Chair with Adjustable Headrest, model OFM-0605-ERGO-HB, is an unbranded ergonomic office seating solution designed for prolonged seated use. Its visual profile balances streamlined professional aesthetics with ergonomic shaping, featuring a tall contoured backrest, curved height-adjustable headrest, fixed loop-style armrests, and a five-prong base that creates a stable, compact footprint measuring 605 x 660 x 1180 mm overall. The neutral black finish lends a polished, understated look that complements a range of interior design schemes. Construction prioritizes durability and breathability: the backrest uses tensioned breathable polyester mesh stretched over a 1.5mm thick rib-reinforced PP internal frame, paired with an integrated molded lumbar contour spanning 240 mm in height for consistent lower back support. The seat combines a breathable mesh top layer over 90 mm total thickness molded high-resilience foam with a 45 kg/m³ density and 50 mm core foam thickness for pressure distribution. Fixed injection-molded PP armrests offer 540 mm of clear width between rests, while the base is built from reinforced nylon with integrated floor glide contact points. A Class 3 black-painted steel gas lift delivers 100 mm of height adjustment, paired with a 2mm thick steel synchro tilt chassis, and 50mm diameter PU twin-wheel casters rated for use on both hard and soft flooring. All wear-facing components are tested to 50000 cycles of use for both back mesh abrasion and caster rolling durability, supporting a 150 kg static user weight capacity at 18 kg net product weight. Core functional features include pneumatic seat height adjustment via side lever with lockable positioning at any point across its stroke, a 12-degree maximum synchro tilt with user-adjustable tension and a tilt lock to secure the backrest in an upright working position, articulating headrest adjustment for customized neck support, full 360-degree swivel, and smooth, non-marring mobility across carpet and hard floor surfaces. This chair is suited for open plan office workstations for 8-hour daily desk work, compact home office workspaces, formal conference meeting rooms, pairing with height-adjustable standing desks, and standard cubicle workstations where its 660mm base width fits standard knee spaces without partition interference. It is recommended for pairing with 2.4 m executive desks. Procurement teams should note each unit ships in 2 cartons with a 23 kg packaged gross weight and 0.26 m³ total carton volume, allowing 135 sets to load in a 20GP container at 85% space utilization; assembly requires 40 minutes per set.