Ergonomic Design: The mesh back of the chair has excellent elasticity, completely suitable for the waist and back curves. It provides comfortable support which helps you to maintain a relaxed posture during long hours of work. It is easier to disperse pressure and relieve muscle fatigue.The Comfortable surface of chair is composed of a high-density natural sponge which is designed for the curve of a human’s butt. It can provide a larger bearing area and can reduce the body’s pain. With handrails and a high density mesh for excellent ventilation makes your sitting more comfortable.