Sitting Comfort Like Sofa] The cushion of gaming chair is built by 16 pocket coils and styling sponge, creating the same elasticity and comfort as a sofa. Springs can better evenly distribute the pressure on the seat cushion, thus making the chair more ergonomic. [Flat Cushion Design] Not only does it have flatten sides of the seat cushion, but also widened backrest and seat by 3 inches and 5 inches, respectively, reducing the pressure on the thighs and back of the chair. The lumbar support with massage function can further relax your body and mind.