Ergonomic Office Chair The mesh back of FelixKings chair has excellent elasticity, completely suitable for the waist and back curve. It provides comfortable support which helps you to maintain a relaxed posture in a long hours of work. It is easier to disperse pressure and relieve muscle fatigue. Comfortable and SafetyThe surface of FelixKings chair is composed of high-density natural sponge which is designed for the curve of humans butt. It can provide a larger bearing area and can reduce bodys pain. With thick handrails and a high density mesh for excellent ventilation makes your sitting more comfortable. It can also protect your lumbar spine and White.