The neat and streamlined appearance, the back frame is integrally formed, and the hollow single frame design onthe back has a strong bearing force. The back frame adopts patented research and development technology tocreate the ultimate curve that exceeds the perfect body shape, so that the back fully conforms to the curvature ofthe human spine curve , The supporting force of the transparent net has great toughness and elasticity, so that theback frame of the chair and the transparent net can completely conform to the whole person's back,. resulting in avery comfortable and comfortable feeling.