The Herman Miller Aeron Mesh Office Desk Chair in size B is a premium office chair designed for ultimate comfort and support. Made with Carbon Mesh Pellicle material in a sleek carbon color, this chair is perfect for any office environment. With adjustable features, it allows for customizable lumbar support to ensure the well-being of the user during long hours of sitting. Made in the United States, this high-quality chair is a stylish and practical seating solution for any workspace.