The Ergonomic Mid-Back Mesh Swivel Office Chair, model OFC-MESH-660BL, is an unbranded office task chair designed for versatile daily use across work and study environments. Visually, it features a breathable blue woven polyester mesh backrest set in a light grey reinforced polypropylene frame, paired with a dark grey woven fabric seat cushion, white reinforced nylon five-star base, and black dual-wheel polyurethane casters for a clean, neutral aesthetic that blends with most interior design schemes. The chair’s overall dimensions are 660 x 660 x 1055 mm, with a 540 mm clear width between armrests, creating a streamlined, compact silhouette that avoids unnecessary bulk. Its integrated contoured mesh lumbar support sits across a 240 mm zone, paired with a 70 mm thick padded backrest and 90 mm thick seat cushion filled with 45 kg/m³ high-density molded polyurethane foam, delivering consistent, balanced support for extended seated sessions. All structural hardware is constructed from steel, with a black powder-coated steel gas lift and black steel tilt-lock chassis for long-term durability. For flexible function, the chair offers 360-degree frictionless swivel rotation, pneumatic seat height adjustment via a side lever with 100 mm of adjustment travel, and a synchro-tilt backrest mechanism with an under-seat rotary tension control knob for personalized recline resistance. The fixed-height light grey polypropylene armrests fold upward 90 degrees to allow the chair to slide fully under desk surfaces when not in use, while dual-wheel swivel casters on all five base points enable smooth, quiet movement across hard and soft flooring. The back mesh has a tensile strength of 180 N/5cm, with 8 mm seam stitch pitch, and supports a maximum user weight of 150 kg with a net product weight of 12 kg. This chair is well-suited for open-plan office workstations supporting 8 hours of daily task work at standard desks, compact home office spaces, collaborative conference meeting rooms, shared hot-desking areas serving diverse user groups, and student or home study desks. It is ideally paired with a 2.4 m executive desk for proportional alignment. For procurement, note that each unit ships in 2 cartons with a packaged gross weight of 23 kg, 0.26 m³ total carton volume, and requires 40 minutes of assembly per set. A 20GP container can hold 135 sets at 85% space utilization, making it a practical choice for bulk and single-unit purchasing alike.