Athletic Bilbao unveiled the new home and away kits for the 2008-2009 season with new sponsor Petronor.
Equally debated, is the origin of the club colours. Although their first colours were blue and white stripes, in 1910 they switched to red and white stripes. There are three schools of thought about why this occurred.
The most common theory is that they were changed out of deference to Sunderland and Southampton, cities where the original British founders were from. Another is that an Athletic member was sent to the Britain to buy a batch of blue and white tops but could not find any and returned with red and white tops instead.












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