The Dutch winger has been wearing grey underpants to overcome the freezing weather, but the German federation don’t seem to be familiar with the colored tribes.

"The German federation want a single color," sporting director Christian Nerlinger told the club's website (www.bayern.t-home.de).

"We'll either have to dye them or he'll have to find another pair."

Robben, who scored twice in Bayern's recent three victories, highlighted the effect of the longjohns on his pefromance.

"I'm an explosive player who must warm up well. They are not beautiful but they are functional," he said.