The Ergonomic Mid-Back Mesh Swivel Office Chair, model OFM-M01-BK, is an unbranded office task chair designed for reliable, comfortable seated support across professional and personal work settings. Visually, it features a streamlined, neutral all-black profile with clean, angular lines suited to a wide range of interior design schemes, with balanced proportions that avoid bulky overhang even in compact work areas. The chair’s construction prioritizes durability and breathability: its backrest uses taut, breathable black polyester mesh stretched over a rigid nylon frame, paired with a seat upholstered in hard-wearing black woven polyester fabric rated for 30,000 double-rub abrasions. The seat core holds 40 mm thick high-resilience polyurethane foam for consistent cushioning, supported by a 14 mm bent plywood internal board. Fixed loop armrests carry a matte black nylon finish, while height adjustment relies on a chrome-plated Class 3 steel gas lift. The 320 mm radius five-star base is built from 2.5 mm thick black nylon, fitted with 50 mm black polyurethane dual-wheel casters, and the 2.5 mm thick steel tilt chassis includes an integrated tension adjustment knob. Practical functions support flexible, comfortable daily use: a side lever activates 100 mm of vertical seat height travel, the backrest offers 12 degrees of backward free-float tilt with adjustable tension and three selectable lock positions, the seat rotates a full 360 degrees, and the dual-wheel casters roll smoothly across both hard flooring and low-pile carpet. Fixed armrests sit 210 mm above the seat to support forearms, and the weight-activated tilt system automatically calibrates tension to match user weight, supporting a maximum static load of 120 kg. This chair is well-suited for open-plan office workstations rated for 8 hours of daily use at standard 760 mm office desks, compact home office study spaces where its 620 mm width avoids excessive footprint, short to medium duration meetings in conference rooms, and high-traffic shared hot-desking environments where its resilient mesh and nylon construction stands up to frequent user turnover. For procurement, note each unit ships in two cartons, requires 40 minutes of assembly per set, and the chair’s net weight is 13 kg, with a packaged gross weight of 23 kg per set. Buyers should confirm ergonomic fit for intended users prior to bulk purchase, and note the recommended matching desk size is a 2.4 m executive desk.