You might be wanting to know just what the difference is amongst 3D and 4D arms. 3D arms Use a static shape, even though 4D arms are adjustable. This suggests they may be moved up and down, forward and backward, or in any other blend of movement for max comfort https://cristiannmlkj.articlesblogger.com/56740286/the-fact-about-essentials-racing-style-leather-gaming-chair-that-no-one-is-suggesting