3D puff digitizing is a specialized embroidery technique that creates raised, three-dimensional designs, most commonly used on hats and caps. This process involves placing foam under the stitching and carefully planning stitch density, direction, and underlay to ensure the design maintains its height and shape. Proper 3D puff digitizing results in bold, eye-catching embroidery with clean edges, smooth surfaces, and durable designs that stand out on promotional apparel, sportswear, and fashion hats. website: https://www.truedigitizing.com/services/3d-puff-embroidery-digitizing