Ergonomic Office Chair, Swivel Office Chair with Mesh High Backrest, Adjustable Lumbar Support, Folding Armrests, Detachable Headrest, Space Saving, 155-185cm, up to 150kgBREATHABLE COMFORTABLE Aesthetic: The elastic and breathable mesh backrest, lumbar support and headrest keep your back cool and comfortable even with prolonged use. The high density seat cushion is durable, springs back quickly and offers medium strength for a pleasant sitting experience. The attractive design easily matches different interior styles. Multifunctional Adjustability: Ergonomically designed seat with a detachable 2D headrest, flexible 2D