Siser's 3D XPD is a material that expands when heated, revealing a puffy, three-dimensional texture. The final appearance of the decoration can be changed through varying the pressing time and pressure. This allows the creation of a wide range of surface effects, such as embroidery, chenille fabric and high relief. When heat applied, 3D XPD puffs up to create a unique bubbly texture to letters and shapes. Create authentic applique looks without embroidery. Great for retro vintage looks!