BALT Seatflex Series Swivel/Tilt Chair with Headrest and Arms Adjustability - 360 Swivel, Dual-Clutch Posture Control, Hip Pivot Motion, Pneumatic Seat Height, Posture Lock, Tilt Lock, Tilt Tension Arm Color - Black Arm Material(s) - Polyurethane Arm Style - T-Bar Back Height [Nom] - 19 1/2 in