MARVY UCHIDA-Puffy Velvet Marker. Puffy Velvet is the only fabric marker that puffs up after you heat it with a heat tool. It is great for t-shirts; aprons; canvas totes and denim. Puffy Velvet is also great for paper crafts; ideal for light and dark fabrics; super easy to use: free hand or with a template. Ink is acid free; odorless; lightfast; waterbased; writes on most fabrics and conforms to ASTM D4236. Care: machine wash gentle cycle; line dry. Available in a variety of colors: each sold separately. Imported.