This amazing PC gaming chair can meet your work and gaming needs. NiamVelo racing office chair is made of premium comfort material and has a back massage function . which allows customers to experience a vibrating massage via remote control . greatly relieving the pain and stress of sitting in the chair for long periods of time. If you want to stop the massage function . you can roll up the cable and put it in a small bag. The back of this black gamer chair can be tilted up to 20?? .and it also has a high backrest to give you a good lumbar support for your back . from neck to hip. With the gas spring . one can adjust the height between 17.3” and 21” according to their needs. Its chair body also incorporates mesh to allow natural air flow and keep the person sitting on it cool.