High-back chair features a mesh back that allows air to flow freely when you're seated to help you stay cool throughout the day. Adjustable lumbar support offers ergonomic support for your lower back to help prevent strain through extended seating. Seat-height adjustment with tilt tension allows a variety of users to sit comfortably at their desk. 360-degree swivel allows you to effortlessly rotate the chair for added convenience. Chair also includes a seat-depth adjustment, seat slider & seat / back-angle adjustment.