Modern Mid Back Office Chair with Velvet Fabric, Swivel Computer Armless Desk Chair with Hollow Back Design for Home Office, BlueMID BACK SUPPORT: This computer chair offers mid back support to help your back be comfortable during your workday. ADJUSTABLE HEIGHT: This office chair has an 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