High-Back Chair Personalized Comfort: Adjustable headrest for tailored support. Durable Design: Mesh back and fabric seat with cold-resistant nylon. Versatile Convenience: 3D armrests offer flexibility and convenience. Ergonomic Seating: 55-degree molded foam seat ensures comfort. Customizable Lumbar: High-adjustable ABS lumbar support for back comfort. Secure Positioning: 3-degree locking mechanism for stability. Sturdy Foundation: 340mm nylon base provides durability. Silent Mobility: 60mm PU castors for smooth and silent movement.