Gotobuy Ergonomic Mesh Computer Office Chair Desk Highback Task Chair with Adjustable Headrest (Orange) Adjustable Head Rest for Comfort & Head / Neck Support A gas lift lever under the seat which adjusts the seat height Original Clipper-Built Ergonomic Designed Mesh Back and Padded fabric Seat Strong 5 Star metal foot with pulley lead 360Degree Swivel Colour: orange