The heir to the crown, the Princess of Asturias, has her own standard and guidon. The Standard of the Princess of Asturias is regulated by Royal Decree 284/2001 that modified the Title II of Spanish Royal Decree 1511/1977. The Standard of the Princess of Asturias consists of a light blue (the colour of the flag of Asturias) square flag with the coat of arms of the Princess of Asturias in the center. The Guidon is identical to the Standard except that the Royal Guidon has a gold fringe. It is made of silk taffeta. The size of the guidon is . It has fallen into disuse because of the Princess's young age.