The Ergonomic High-Back Mesh Office Chair with Adjustable Headrest, model OFCH-MESH-HB-635, is an unbranded ergonomic seating solution built for consistent daily use. Its visual profile features a tall, contoured mesh backrest paired with a structured seat, fixed padded armrests, a curved height-adjustable headrest, and a wide five-star base finished in smooth matte black nylon, creating a streamlined, professional silhouette that blends unobtrusively into a range of interior settings. Constructed for durable, long-term performance, the chair uses a breathable woven mesh backrest stretched over a nylon-fiberglass frame, paired with a seat padded with 45D high-density molded polyurethane foam topped with breathable stretch mesh and wear-resistant edge trim. The frame and fixed armrests are built with robust polypropylene cores softened with PU padding for comfortable arm support, while the glass-reinforced nylon five-star base features 2.5mm wall thickness to deliver stable support. Smooth, floor-safe dual-wheel PU casters attach to the base, paired with a Class 3 black steel gas lift and 3mm thick steel plate center-tilt mechanism to deliver reliable movement and adjustment. Designed for user comfort across full work shifts, the chair supports up to 8 hours of recommended daily use, with pneumatic seat height adjustment that reaches 525 mm at its maximum setting. The headrest moves 60mm vertically to cradle the cervical spine, while an integrated contoured lumbar zone aligns with the natural curve of the lower back. The tilt mechanism locks at both a 90-degree upright position for focused work and a 120-degree recline for relaxed posture, with an under-seat knob to adjust recline tension to match user weight. Full 360-degree swivel and smooth-rolling casters allow easy movement across both hard flooring and carpeted surfaces. This chair fits seamlessly in home office workstations, open plan corporate employee workstations, conference rooms, and small business or co-working spaces, and is calibrated to pair with 760mm height desks to maintain proper seated elbow clearance, with suitability for use alongside 2.4m executive desks. Procurement teams and individual buyers should note the chair ships in two cartons per set, with an 40-minute assembly time per unit. Structural parts carry a 3-year warranty, and the model supports a maximum user weight of 136 kg, with high cycle ratings for gas lift and caster durability to support high-traffic commercial use. The compact packaged dimensions also support efficient bulk shipping for large space fit-outs.