Adjustable Backrest, Adjustable Armrest, With Cushion, Class 3 Gas Lift, Extra Comfort Molded Seats, Pu Leather, Quilted Seat Design, Ergonomic Durable Design, Z Support Multi Function Tilt Mechanism With Locking System. Back Angle Up To 160 Degrees, Good Posture, Prolonged Periods Of Sitting, Proper Posture, Adjustable Tilt, Secure And Sturdy Rocking, Lumbar Support.