The Mid-Back Mesh Office Task Chair with Fixed Armrests (model MB-MESH-TASK-590) is an unbranded professional seating solution with a streamlined, matte black mid-back profile that balances support and a non-intrusive visual footprint. Its clean, functional layout features a contoured backrest positioned to align with natural seated posture, paired with fixed closed-loop armrests that sit 190mm above the seat for stable forearm support, all anchored to a sleek five-star caster base that maintains a compact, space-efficient profile suitable for close desk placement. The chair is built for long-term daily use with a tiered material specification: the backrest uses tensioned breathable polyester mesh stretched over a glass-fiber reinforced nylon frame, fitted with a molded contoured polypropylene lumbar pad shaped to cradle the lower back. The seat uses a molded plywood inner pan topped with 60mm thick high-density polyurethane foam, upholstered in wear-resistant polyester fabric. Armrests are constructed from molded polypropylene and nylon blend, while the five-star base is injection-molded nylon, fitted with dual-wheel hard-floor nylon casters. The 14kg chair supports a recommended static weight capacity of 136kg, backed by a 5-year component warranty. Core functional features include full 360-degree swivel enabled by the central gas lift and base bearing, with pneumatic seat height adjustment offering 100mm of vertical travel controlled via a side lever, reaching a maximum seat height of 520mm from the floor. Users can activate a tilt/rocking function with single-position tilt lock, with a user-adjustable knob to modulate tilt tension to individual preference, supporting a maximum 125-degree recline angle. The dual-wheel casters roll smoothly across hard floors and low-pile carpet without requiring additional floor mats, with caster rolling durability rated for 40,000 cycles. This chair is suited for a wide range of commercial and residential work settings: its compact overall dimensions of 590 x 640 x 1030 mm fit standard 1200mm open-plan office workstation layouts, while its neutral black finish works seamlessly for home office study spaces. Its mid-back profile supports upright posture for short meetings, making it ideal for conference rooms, and its durable mesh and smooth mobility suit high-traffic call centers and shared desk environments. The 520mm maximum seat height also ensures compatibility with both standard fixed desks and height-adjustable standing desk setups. For procurement planning, note that each unit ships across 2 cartons, with a packaged gross weight of 23kg per set and total carton volume of 0.26 m³, allowing 135 sets to be loaded in a 20GP container at 85% space utilization. On-site assembly requires an 40 minutes per set. The chair is designed to accommodate users up to 1800mm in height, with standard nylon casters suited exclusively for hard floors and low-pile carpet installations, so alternate caster specifications may be required for high-pile carpet spaces.