Adjustable height is an essential requirement as is back support and the ability to reach across a more expansive surface. Adjustable heights, an array of colors and the possibility of mobility represent just a few of the unique reasons why someone would want to place one of these seats in their home. Finish out your workspace with a drafting stool. Upholstery design provides an extra level of comfort. Upholstery colors are designed to complement the frame and the decor.