My favorite book of all-time has been Frank Herbert's sci-fi novel Dune. In this book, the main character is a boy named Paul Atreides, who later becomes known as Muad'dib. Within the Fremen tribe, Muad'dib is the name of the desert mouse (represented on the patch). The famous quote accompanies the patch "I must not fear. Fear is the mind killer."
This patch is a MUST HAVE for any fans of Dune and is certainly something worth putting on your martial arts uniform (Gi), jacket or travel bag. It is both iron-on and sew-on. (I recommend doing both if it's a martial art uniform).
Email me if you have any questions. Enjoy!