Tilt Tension Control Recline rate adapts to weight of user. Tilt Lock Locks out tilt function. Back Angle Adjustment Sets back angle for personalized comfort in reclined position. Synchro-Tilt Back reclines in a preset ratio to seat. Seat Height Adjustment Sets seat height to desired position relative to floor. Waterfall Seat Front of cushion slopes to reduce pressure on the back of the knees. 2.8″ Ratchet Back Height Adjustment Backrest easily adjusts up or down relative to seat for personalized lumbar region support and comfort