Swivel Acrylic Armless Adjustable Height Office ChairWear resistant acrylic material for longer service life Smooth and glossy surface for easy cleaning and maintenance Safe gas lifting lever makes it easier to adjust seat height from 16. 5" to 20. 5" 360swivel design for effortless turn in any direction to get items or talk with colleagues Adjustable seat height helps you find a comfortable height for working or resting No armrest keep the office chair easily under the table Ergonomic design ensures