[Head and Lumbar Support] The office chair comes with an ergonomic headrest covered in soft fabric. It provides flexible lumbar support that gives you a comfortable working position and can relieve neck and back pain and tension. [Foldable Armrests] The armrest can be folded when not in use. This helps you keep your typing position close to the table and the keyboard can be adjusted as close to your chest as possible. [High-Quality Material] The backrest of the office chair is made of high-quality mesh fabric, highly breathable polyester for added comfort. The cushions are filled with high-density foam, which is durable and soft to the touch. [Adjustable Height] The height of the chair can be adjusted to suit your needs. The tilt spring can be adjusted to a height of 118-127.5 cm and the seat height is 47-56 cm. It helps blood and oxygen circulation and even improves the digestive system. [Cooperative Service] We provide a one-year warranty for the product. If you have any questions