Flat embroidery is a type of two-dimensional embroidery in which the logo or pattern is embroidered directly into the surface with thread. Flat needlework is “flat” and lacks depth. 3D embroidery, also known as puff embroidery, employs the use of a foam backing material behind the thread to “puff” the logo or design and make it three dimensional. https://dcfemb.com/blog/