DXRacer Tank Series DOH/TS29/NE Big and Tall Chair Racing Bucket Seat Office Chair Gaming Chair Ergonomic Computer Chair Esports Desk Chair Executive Chair Furniture with Pillows (Black/Green) Ergonomic design-- more efficiently and comfortably,Free bonus: headrest cushion & lumbar cushion Patent race car seat breathable material : PU Extra higher backrest to save neck and spinal, Flexible seat back with adjustment 4D Adjustable Arms with adjustment protect shoulders and wrists Lifetime warranty on frame, 24-month warranty on parts Multi-directional 4D Adjustable Arms Heavy Duty-T Tilt Mechanism Strong Aluminium Base PU cover 3&#034; PU Casters