This chair was designed to support the lower-to-mid back region. Chair easily swivels 360 degrees to get the maximum use of your workspace without strain. The pneumatic adjustment lever will allow you to easily adjust the seat to your desired height. The foot ring can also be adjusted to your height preference. The adjustable armrests take the pressure off the shoulders and the neck, which minimizes the risk of pain. This versatile chair is sure to make an impact whether it is used in the home or work field. (Adjustable Range 22.5"-27"H or 26"-30.5"H)