Ergonomic design effectively relieves fatigue. Technology cloth wear-resistant, soft and comfortable. Filled with high-resilience sponge, it provides elastic support and won't collapse even after sitting for a long time. Its manual function allows for multi-purpose sitting and reclining, as well as rotation, ensuring your comfort in any position. Carbon steel frame and base, durable. Use pull button design, highlight the characteristic beauty.Provide excellent strength and smooth extension.