Modern Office Chair with Flip-up ArmsYou can flip the arms up and put the office chair under the desk for saving space, or meet your need of with/without armrests while working. The adjustable arms desk chair is suitable for living room, study room, conference room and office. Desk Chair with Adjustable Lumbar SupportThis computer mesh office chair has an ergonomic backrest, which can fit your back curve and give you enough support for a long time. The adjustable extent of the lumbar support is 1.6.