Furniture of America Leonid Pneumatic Height Adjustable Mesh Office Chair, Black Pneumatic height adjustment for easy modification Padded mesh seat, back and armrests provide comfort 5-Prong base provides stability and casted wheels provide movability Measures 29 1/4 inch length by 25 3/4 inch width by 42 3/4 inch high; Maximum height up to 46 1/4 Inch