Barcelona, Spain — Few opponents have been able to slow Barcelona. But Nike may have inadvertently managed to do just that — with shirts that absorb too much sweat.

The Spanish soccer champions say they have recently met with Nike officials to complain about the new shirts. The team contends the shirts absorb so much moisture they take on added weight over the course of a game.

Nike said in a statement to The Associated Press on Tuesday that it is "working to find a solution to the problem with the shirts along with the club."

The new shirts are made from a fabric called Dri-FIT, which is composed of recycled plastic and used exclusively by first-team squads of Nike's sponsored clubs, including Manchester United, Arsenal and Inter Milan. The jerseys are not for sale to the public.