The High-Back Ergonomic Office Chair with Adjustable Headrest, model EO-CH-650OR-WH, balances streamlined modern styling with ergonomic utility for both residential and commercial work settings. Presented in a two-tone finish, the chair pairs a dark grey breathable mesh backrest with a terracotta woven fabric seat, set against a white reinforced structural frame and matching white five-star base for a clean, contemporary visual profile. Its tall high-back silhouette integrates a curved mid-back lumbar support panel, padded T-armrests, and a matching grey mesh-upholstered headrest to create a cohesive, contoured layout designed to align with natural seated posture. Constructed for consistent daily use, the chair features a glass-fiber reinforced polypropylene and nylon frame supporting its back, arm supports, and seat pan. The seat core is built from high-density injection-molded polyurethane foam, upholstered in woven polyester fabric for a soft, durable seating surface, while the backrest uses stretched breathable polyester mesh to promote air circulation during extended use. Its central support uses a powder-coated BIFMA Class 3 steel gas lift, connected to a 3mm thick stamped steel tilt chassis, with black polyurethane casters mounted to the painted white nylon five-star base for stable, smooth movement. Core functional features support flexible, comfortable use across varied tasks: full 360-degree swivel rotation is enabled via the central gas lift joint, with pneumatic seat height adjustment controlled by a right-side under-seat lever. The backrest offers a 120-degree recline with three lockable positions and an adjustable tension knob to match user preference, while the height-adjustable headrest pivots to deliver targeted neck support. The fixed contoured lumbar panel supports the mid-back, and the casters roll smoothly across hard floors and low-pile carpet to enable easy repositioning. This chair is well suited for home office workspaces, where its ergonomic support accommodates long desk sessions, as well as corporate open-plan offices and executive private offices, where its modern finish complements contemporary interior design. It also fits co-working flexible spaces, supporting easy movement between work surfaces and collaborators, student study desks for teen and adult users, and conference rooms where it delivers sustained comfort during long meetings. Procurement teams should note that each unit ships in two cartons, with an assembly time of 40 minutes per set, and packaged dimensions that support high-density loading for bulk orders. The chair is designed to support a maximum recommended user weight of 150 kg, with fixed armrest positioning and a neutral color palette that coordinates with a wide range of desk and decor styles.