Details: Amia is made for sitting. It’s a stool with comfort you can feel all day long. Tucked away inside Amia’s trim backrest is one of its sitting secrets the patent-pending LiveLumbar, a system of flexors that contour to fit your spine, giving you continuous support as you move in your stool throughout the day. and with Amia’s other made-for-comfort features like 4-way adjustable arms, adjustable seat depth and seat height and a flexible front seat edge, you can create the position that’s ideal for you. Steelcase Amia stool complete features are pneumatic seat-height adjustment, adjustable LiveLumbar, flexible seat edge, height-width-pivot-depth adjustable arms, hard casters, upholstery/fabric, black plastic outer back, frame and base.