Multifunctional & Special: Drafting chair with flip up arms is easy to push under desk for saving space. Sitting position can be adjusted up and down to match your demand. These features make the chair more special.Wide height adjustment range : Tall office chair with wide height adjustment range from 21.5" to 30.5" is perfect for working to use at low position or relaxing your leisure time at high position like playing the guitar and so on. Also, the footrest can be adjusted up and down to your ideal height.Durable & Sturdy: Certified by BIFMA, this drafting chair is safe and reliable. 360 degree swivel lockable casters ensure effortless gliding over carpeted offices. Sturdy five star base assures the stability. Load capacity up to 280 pounds.Ergonomic design & Effortless installation: Ergonomic lumbar support with breathable mesh material protects your waist and fabric seat with elastic foam provide you extra comfort, sedentary and not feeling tired. Simple steps allow you to install almost without refering to the instruction, also we offer the professional instruction.Lockable wheels: Based on your own preference and purposes, the wheels can either be locked or loosened, which is safe and convenient. Strong wear resistance to avoid scratching the floor. Color: Black.