Ergonomic design, effective relief from fatigue. Using faux leather, soft skin, abrasion resistance, waterproof and anti-fouling. Filled with high elastic sponge and doll cotton, fluffy and soft, sitting for a long time without collapsing. The manual function allows you to freely adjust the Angle, recline, sit and rotate, ensuring your comfort in any position. Carbon steel frame provides superior strength and smooth extension.With mobile phone stand, free hands, stable without shaking.