The High-Back Ergonomic Mesh Office Chair with Adjustable Headrest (model KL-05A/B, unbranded) presents a streamlined, professional silhouette tailored for extended seated use, with a contoured high-back structure, curved integrated headrest, and evenly proportioned layout that balances support with a compact footprint suitable for standard desk configurations. Its construction pairs a breathable polyester mesh backrest supported by a reinforced PP+fiberglass Y-frame with a padded fabric seat built over a 12 mm bent plywood inner panel, cushioned with high-density molded polyurethane foam. The frame combines plastic and metal structural elements, anchored by a reinforced nylon 5-star caster base fitted with PA+PU dual-wheel swivel casters. Armrests feature steel support posts topped with soft PU padding, while height and tilt adjustments operate via a Class 4 steel pneumatic cylinder. The headrest uses breathable mesh over a curved PP support for consistent neck contact. This chair delivers comprehensive adjustability for personalized comfort, including 250 mm vertical headrest travel, 100 mm pneumatic seat height adjustment controlled by an under-seat lever, 80 mm vertical armrest height adjustment, and 360-degree swivel rotation. The backrest supports 135-degree recline with multi-position locking, paired with a knob-controlled tilt tension feature to calibrate resistance to individual user preference. Dual-wheel casters enable smooth rolling across both hard flooring and carpeted surfaces. It is well suited for a wide range of commercial and residential spaces, including private executive offices for daily extended use, open plan office cubicles where its standard footprint fits standard workstations without overhang, residential home offices shared by multiple users, conference rooms supporting collaborative meetings, 24-hour call centers for shift-based work, and co-working shared spaces, where its neutral black finish aligns with varied decor schemes. For procurement, note that each unit ships across two cartons, with an assembly time per set. The 20GP container loading capacity supports bulk order planning for large fit-out projects, and the chair’s weight rating accommodates a broad range of users across shared or dedicated workstations.