Office Factor Ergonomic Back Lumbar Support Executive Mid Back Desk Chair on Wheels for Conference Room or Reception Area | Heavy Duty 300lb Capacity, Breathable Mesh, Adjustable Arms ERGONOMIC MIDBACK LUMBAR SUPPORT: Showcasing a high back panel with an ergonomic curve, this black executive chair keeps your lumbar supported to prevent aches & pains when sitting for prolonged periods of time. STURDY ALUMINUM BASE; 300lb CAPACITY: The sleek 5 prong frame of our back support desk chair is crafted out of ultra durable aluminum metal, thus delivering strength, reliability & a 300lb weight capacity. FINISHED WITH UPGRADED NYLON MESH: While the lumbar curvature & strong aluminum base provide a comfortable sitting, the top quality mesh used to cover the office executive chair also keeps you cool & comfy. FULLY ADJUSTABLE OFFICE CHAIR ARMS: Outfitted with arms that can be adjusted up & down  side to side, our black mesh office chair on wheels is recommended for board rooms, conference rooms & focus groups. CASTERS ROLL ON WOOD FLOORS/CARPET: Each Office Factor executive chair with lumbar support has also been equipped with a set of extra tough casters, allowing it to roll on hardwood floors, tile floors & even carpet.