The Onyx chair is a fresh, contemporary office chair that offers a range of inspired features such as a multi-functional asynchronous mechanism with multiple adjustments and a contoured foam seat and back for extra support and comfort. The Onyx is a top choice for a posture task chair. Available in black or blue fabric and Soft Bonded Leather upholstery options. Optional headrest variant available. Product Features: • Contoured foam seat and backrest for maximum user comfort • Triple lever multi-function mechanism • Ratchet height adjustable backrest • Pump up lumbar support • Seat slide • Height adjustable arms • Brushed aluminium 5 star base • UK crib 5 foam and fabric