A3 mesh back office chairs can promote breathability for better air circulation. The included 2D mesh headrest and fully adjustable armrests provide optimum ergonomic comfort when relaxing. Built-in lumbar support improves your posture and helps prevent back strain and muscle fatigue. This mesh back office chair adapts sturdy nylon construction and can ensure strength and stability in use suitable for you who need to sit for a long time. Now, upgrade your office setup with this A3 mesh high-back executive office chair!