By flipping up/down the armrests, you can store this chair under the desk to save space and rest your arms for minimal fatigue. The lever under the seat brings a lot of convenience in adjusting the seat height( 57-77cm). Also, the angle of the backrest is adjustable (93°-110°) to meet your different needs in daily life. With a height-adjustable footrest, the office drafting chair helps to enhance posture. The breathable backrest prevents sweating and stickiness caused by sedentary sitting and hot weather. Thanks to the contoured sponge padded seat, you don't have to worry about numbness in your legs and thighs. What's more, the 360°swivel casters let you enjoy full mobility and flexibility in the office or at home. The heavy duty base with premium class-4 gas lift promises smooth adjustment and high safety.