The armrests of the office chair provide support for your elbows when you want to take a break from your hands. Computer chairs allows you to flip the arms up and put the chair under the desk. The cushion of office desk chairs cushion is filled with a full block of high-density foam to provide a soft, fatigue-free sitting experience. The high quality mesh material backrest keeps air circulating and keeps you cool and comfortable. Home office desk chairs fit the natural curve of the lower back, providing back and waist protection for long sitting and keeping the spine away from body pain. Rattantree Swivel Computer Chair with 90 degree Flip-up Armrest & Lumbar Support for Home/Office in Grey