Give your office a comfort upgrade with this WorkPro 12000 Series mid-back chair. A swivel base and casters allow easy movement, while the nylon and aluminum frame pairs strength with durability. The mesh back delivers ample airflow for breathability, and 1-touch pneumatic height adjustment enables simple customization. This WorkPro 12000 Series mid-back chair has a lumbar support feature to help improve posture and alleviate strain. Lumbar supports your lower back to improve posture. Mesh back to help keep you cool. Modern mid-back chair in black. GREENGUARD certified - certified for low chemical emissions: UL.COM/GG - UL 2818. Ranked in two tiers: Certified and Gold.