DXRacer Classic Series DOH/CA120/N Big and Tall Chair Racing Bucket Seat Office Chair with Leg Rest Comfortable Chair Ergonomic Computer Chair Desk Chair (Black) Ergonomic design-- more efficiently and comfortably, Free bonus: lumbar cushion and build in leg rest Wider seat, Patent race car seat breathable material: Leather Style Vinyl Extra higher backrest to save neck and spinal,Flexible seat back with adjustment Adjustable Arms protect shoulders and wrists Lifetime warranty on frame, 24-month warranty on parts Adjustable Arms Multi-functional Mechanism Strong Aluminium Base Leather Style Vinyl 3&#034; PU Casters