You might be thinking what the difference is between 3D and 4D arms. 3D arms have a static form, although 4D arms are adjustable. This suggests they are often moved up and down, ahead and backward, or in some other blend of motion for max ease and comfort. If you https://does-a-gaming-chair-make37260.bloggerchest.com/34220360/about-gaming-chair-for-good-posture