Breathable mesh fabric, sponge padding, and an integrated lumbar area work together in this ergonomic desk chair to support your back during long work sessions. The seat height adjusts from 19-22.5 in using a gas lift so you can align more comfortably with your desk. A 90°-105° rocking angle lets you gently lean back to ease tension, controlled by a tilt tension handle and height lever. A strong 5-claw nylon base with universal wheels supports up to 330 lbs for stable, smooth movement.