The round and smooth armrest fits the curve of the arm, and is paired with a high-density rebound sponge seat cover. It won't collapse even after sitting for a long time and can relieve pressure without tiring the waist. High-quality linen fabric is skin-friendly and breathable, resistant to friction and does not pill, with beautiful texture and easy to maintain. The 360° metal rotating base is stable and load-bearing, with smooth steering and no misalignment.