Herman Miller Aeron Size B Fully Loaded Office Chair Like New Condition. Adjustable arms move vertically, outward and inward. Adjustable lumbar support for lower back support. Backward tilt with Tilt tension/recline control to fix your backward tilt. Forward tilt: to adjust the chair forward/angle while seated to relieve the thighs, legs, and feet’s posture while leaning forward. Tilt mechanism to increase or decrease the tilt tension for smoother reclining motion. Adjustable Arms height and pivot adjustment (in and out). This chair is its original condition unaltered. Easy to put it back via 4 bolts.