Flash Furniture High Back Designer Gray Mesh Executive Swivel Chair with Adjustable Arms Contemporary Office Chair. Swivel Seat. Tilt Lock Mechanism High Back Design. Tilt Tension Adjustment Knob Ventilated Mesh Back Material. Padded Gray Mesh Upholstered Seat Built-In Lumbar Support. Seat size is 21 inches wide x 20 inches deep. Arm height from seat is 9.25 to 12 inch height White Stitch Accent on Seat and Arms. Waterfall Seat promotes healthy blood flow