This gaming desk chair is made of PU leather for comfort and breathability.The seat cushion is designed to be thick and slightly concave to conform to the curve of the hips. In addition, multi-line elements and a cut-out backrest protrusion can also help you find the most relaxed sitting position that is best suited for long gaming or work hours.The 90° flip-up armrests help you save space and provide extra support for your arms to relax.When the armrests are flipped up and locked in an upright position, the chair can be easily pushed under the table.Release the button under the chair to activate the rocking motion.