“When in Munich, Germany it’s a must to partake in the culture.. October Fest here I come #whattoexpect? #cultureexchange,” the world’s fastest man tweeted on Tuesday evening underneath a picture of him posing in traditional Bavarian lederhosen.

The six-time Olympic champion, aged 27, has been training and competing in Puma sportswear since 2003.

“We are very proud to extend our sponsorship contract with him because Usain is the perfect ambassador of the Puma brand,” said chief executive Björn Gulden.

“He will play a crucial role in our future product concepts as well as brand communications leading towards the Olympic Games in Rio 2016 and beyond,” he added.

The financial terms of the contract were not disclosed but according to Forbes magazine the deal will earn Bolt some $9 million per year.

Last week, Bolt revealed that he may not retire in 2016 after the Rio Olympic Games as expected.

“I think that my sponsors and everybody wants me to continue so I’ve really sat and thought about it and maybe I will go on for one more year, and just make everybody happy,” he told AFPTV.

“My fans also are saying I should go on, so I think I might do another year,” he added.

See our photo gallery of celebs at Oktoberfest here

The Local/AFP/jlb