Uchida Of America Puffy Velvet Markers, None Uchida Puffy Velvet Fabric Markers are ideal for use on light or dark fabrics and will work great on prewashed T-shirts, aprons, canvas totes and denim Just draw your image, either free-hand or using a template, let dry thoroughly, then use a heat tool to make the paints puff up and have that velvety texture. Light-fast, odorless, and acid free.