3D puff digitizing is a specialized embroidery technique used to create raised, three-dimensional designs, most commonly on hats and caps. This process involves converting artwork into machine-readable embroidery files that account for foam placement, stitch density, and stitch direction. During embroidery, a layer of foam is placed on the fabric, and stitches are applied on top to create a bold, elevated effect.
website: https://www.truedigitizing.com..../services/3d-puff-em