Developed with tips specifically adapted for use on fabric, Setacolor 7A Light Fabrics and Opaque markers offer highly pigmented colors and are easy to handle for extra precision. The professional quality of these markers ensures an optimal, matt finish on most pre-washed fabrics. Light Fabrics brush tip markers are suitable for use on light colored fabrics, while Opaque round tip valve-pump markers can be used on both light and dark colored fabrics. Once paint has been applied to surface, air dry for two hours, then heat-set with an iron on the reverse side of the fabric for 5 minutes (cotton setting) OR place in preheated oven for 5 minutes at 300 °F (150 °C). Once set, fabrics remain soft and supple, and can be hand-washed or machine-washed at up to 100 °F (40 °C). AP certified.