Pneumatic controls make our desk chair easier to raise or lower the seat. The recline mode helps you to relax from heavy work, pull out the handle to recline and pull our office chair in to stop. The PU casters provide great mobility, suitable for hard floors, carpet and more, while being silent during swivelling and moving without scratching your floor surface.desk chair office chair computer chair mesh chair. Our mesh chair using high-density sponge cushion, more flexible, office chair with a middle back design, can provide good Lumbar Support. The padded mesh seat is thick and resilient. The computer chair uses a high breathable mesh back to make your back feel comfortable and preventing body heat and keeping your hips and legs cool and sweat-free. mesh chair computer chair office chair desk chair.