-The beautiful and practical chair can make you more comfortable and relaxed when working or studying. Thickened high-density sponge is not easy to collapse. The ergonomic design can share the pressure on the waist and back. Even if you sit for a long time, the sofa-like texture can reduce your fatigue. -The thickened explosion-proof tray and nylon feet have a stable 200KG load-bearing capacity and are not easy to tilt to avoid falling. The SGS-certified safety rod has undergone many lifting and rotation tests, so you can choose with confidence. -Multi-angle rotation and lifting functions make it easier for you to switch between multiple tasks. During this process, the PU winding pulley will not produce noise, and you don't need to worry about scratching the floor. -It can be used as office chair, bar chair, executive chair, computer chair, desk chair, single sofa. Enjoy simple fashion at home or office. Material: velvet fabric​​+ high elastic sponge + nylon feet + PU pulley Size: Sitting height 42cm-52cm (16.5in-20.5in). The backrest is 40 cm (15.7 inches). The cushion is 44cm*38cm (17.3in*15in). The feet are 55 cm (21.7 inches) wide. It can bear a weight of 200Kg (441lbs). The best experience height of the table is 72cm-85cm. Function: lifting, rotating, sliding Installation method: assembly There are more fashion choices in this shop, welcome to buy! If you have any questions during installation or use, please feel free to contact us, we are happy to provide you with professional advice.