DXRacer Classic Series DOH/CBJ121/NY Newedge Edition Racing Bucket Seat Office Chairs Comfortable Chair Ergonomic Computer Chair DX Racer Desk chair (Black/Yellow) Ergonomic design-- more efficiently and comfortably, Free bonus: lumbar cushion Wider seat, Patent race car seat breathable material: Leather Style Vinyl Extra higher backrest to save neck and spinal,Flexible seat back with adjustment 3D straight armrests protect shoulders and wrists Heavy duty aluminum base with 3" casters, multi-functional mechanism, Latest design