This Furmax Drafting Chair is the perfect addition to any office or workspace. It is ergonomically designed with a comfortable back and lumbar support to help reduce strain on your spine and reduce fatigue. The pneumatic seat height adjustment allows you to use the chair for drafting desks, standing desks, other tall office desks and normal desks. The quality footrest ring is made of chrome material and is adjustable for different body types. The soft and high elastic fabric with good air permeability and high density cushion allow air circulation to keep you cool and comfortable. The package includes an instruction manual and allen wrench for easy assembly. If you have any questions about the product, our customer service team is here to help.