The rolling massage function on this chair really is fabulous, but don't take the manufacturers word for it - we tried the chair out on some willing and independent participants.... this clip shows their reactions [http://www.youtube.com/watch?v=gcu4OzZ3sgM] Features include Luxury massage function executive chair upholstered in supple faux leather Kneading / rolling massage function on lumbar support Mains operated Operational glow functionAlso available in black Gun metal coloured arms and matching capped baseErgonomic lumbar supportSoft padded armrests Reclining function with tilt tension Gas lift seat height adjustment Requires easy self assembly