Two features of the Stressless® have contributed most to garner the support of the ACA. The PlusTM System moves the headrest slightly forward as the chair glides back, allowing for easy reading, television watching or net surfing. Then, with a quick snap of the headrest, it lies flat for maximum relaxation. In addition, the Stressless® incorporates a lumbar support system that matches the changing contours of one's lumbar area. As the chair glides to recline, the lumbar area curves outward to offer continual support of the lower back area.