Fabric screen printing ink has great coverage, workability and is easy to clean up.  They are permanent on fabric once properly heat set.  After ink dries, use a paper or cloth interface then use a household iron on medium to high heat setting for 3-5 minutes on each side.  Make sure to be constantly moving the iron to prevent scorching. 
 
As always, if you have any questions about this product or similar products don't hesitate to contact us at support@norcal-art.com!