FC Barcelona jersey World Club Champions badge
FC Barcelona won the FIFA World Club Championship in December of 2011. This gives the club the right to wear a special badge until December of 2012. The badge is called the FIFA World Club Champions badge.
To the left arm sleeve Barcelona wears a sponsor logo from the Catalan TV station TV3. The first Catalan TV station to broadcast exclusively in Catalan. During the time when Barca did not have a sponsor logo on the jersey this would be the only commercial content on the jersey (apart from the logo of the athletic apparel sponsor).
On the right arm sleeve Barcelona has the LFP badge from the Spanish league. When they play Champions League football this badge is replaced by the UEFA Starball badge. This is the only change though. Jersey, WCC badge, TV3 badge, shirt sponsor + name and number kit all remain the same.
For retail all jerseys come with the LFP sleeve badge pre-printed though. It is usually sewn on while some times it can be printed. The badge for the retail jerseys is slightly smaller than the one worn on the pitch by the players.