This chair is built with a chrome base, TUV certified casters, Intertek approved PU leather, SGS approved Gas-Lift system, and PP plastic armrests supporting up to 180kg. The ALFORDSON desk chair includes a wider and taller S-curve backrest and high-density foam padding on the seat, which complements the body shape. The chair features a heated seat, 8-point massage, and a retractable padded footrest, with a 90-150 degree recline adjustment. Designed for professionals, the ALFORDSON office chair includes universal wheels, a chrome base, 360-degree swivel, and seat height adjustment for flexible positioning. If you have any questions, the ALFORDSON provides online customer support for this chair.