The Chester Riser features a dual motor mechanism and has been designed for ease of use. Dual motor mechanism enables you to independently control separate areas of the chair, so you can find a position to suit your needs. The soft foam padding in the backrest and headrest offers just the right balance between comfort and support. And the comfortable padded armrests help you choose a position that offers complete relaxation for your arms. The attached controller lets you heat the base of the backrest to...