Ergonomic Design --- Curved backrest can perfectly line up with a human body line, and the lumbar and head support system resembles a pair of hands, pushing up and supporting your back and head.Durable and Stable --- This home office chair is made of Heavy duty base & solid rolling casters and high-quality fabric mesh backrest makes it more stable and sturdy Max Capacity 120KG.Multi-function- 360 degree swivel, enjoyable rocking function, 90 to 180 degree backwards movement, smooth Armrest and seat-height adjustment, and lumbar Cushion, all to make an ideal seat.