Mid Back Office Chair, Executive Office Chair with Thick Padding, Desk Chair with High-End Gas Lift, Sturdy Base and Velvet-Feel Fabric, GreyMID SUPPORT: This computer chair offers mid back support to help your back be comfortable during your work day. ADJUSTABLE HEIGHT: This office chair has adjustable seat height from 18" to 22. 75" to match your desk and sitting styles. OPEN BACK: This task chair is breathable with an open space in the back to allow airflow and keep you cool. EASY MOVEMENT: This mid back chair comes with 360 swivel wheels so you can get around your home office easily