The YUXIANG Mid-Back Fixed Armrest Ergonomic Mesh Office Chair, model OFM-FX-650GY, delivers a balanced blend of supportive comfort and practical durability for commercial and home work settings. Its streamlined, professional silhouette features a 650mm overall width, with a 420mm wide, 550mm tall mesh backrest paired with a fixed T-shaped polypropylene armrest design that offers stable upper arm support without excess visual bulk, fitting neatly alongside standard and oversized work surfaces. Constructed for long-term regular use, the chair uses high-tension polyester breathable mesh for the backrest, stretched over a glass-fiber reinforced polypropylene frame that holds a contoured curved panel to deliver consistent built-in lumbar support. The seat features a 60mm thick core of high-density molded polyurethane foam wrapped in wear-resistant polyester fabric for easy upkeep. Its base is built from injection-molded glass-fiber reinforced nylon, paired with a Class 2 black steel gas lift, a 2mm thick cold-rolled steel tilt mechanism with single-position lock, and 55mm hard PA nylon twin-wheel swivel casters. The chair supports a 125kg recommended user weight, with a 160kg seat static load capacity and gas lift tested to 100000 adjustment cycles. Functional features include 100mm pneumatic seat height adjustment that locks at any preferred height between 415mm and 515mm, 360-degree swivel for unobstructed access to adjacent workstation surfaces, synchronized back tilt with 12 degrees of rocking motion, manual tension control, and an upright position lock. The open mesh backrest prevents heat buildup during extended sitting, while casters roll smoothly across hard floors and low-pile carpet without locking brakes for flexible repositioning. This model suits a wide range of spaces: it fits compact open-plan office workstations with standard partitioned desks, pairs well with modern home study desks for remote work, provides upright support for conference and meeting room use, enables flexible guest seating in reception areas, and stands up to high-turnover shared use in call centers. It is designed to match 2.4m executive desks as well. Procurement teams should note the chair ships in knock-down construction across two cartons per set, requires 40 minutes of assembly per unit, and allows for efficient bulk shipping with 135 sets fitting in a 20GP container at 85% space utilization. The light gray neutral finish coordinates with most existing workspace decor schemes.