By Pete Jenson for MailOnline
Published: 12:03 GMT, 7 November 2017 | Updated: 12:03 GMT, 7 November 2017
The new Adidas kit that Spain will wear at next summer's World Cup has sparked controversy because it appears to be in the colours of the republican flag that was Spain's official flag between 1931 and 1939 and is still used by those who want to abolish the country's Monarchy.
The shirt is based on the jersey worn by Spain at the 1994 World Cup with yellow and blue flashes down the side of the red top.
But because on the 2017 version the yellow and blue merge it creates the optical illusion that the shirt is red, yellow and purple – the colour's of the Spanish tricolor banned during from the end of the civil war in 1939 by the Franco dictatorship until 1977.
Adidas unveiled the design for the home kit Spain will wear at next year's World Cup but the combination of red, yellow and purple has sparked controversy
The red, yellow and purple colours resemble a Spanish Republican flag used in the 1930s