Real Madrid has won the Champions League 13 times. Thus they have the right to wear the UEFA badge of honors with the number of the titles they have won engraved.
The design changed prior to the season 21/22. Previously there was the BoH badge to the left arm sleeve alongside a Respect logo. To the right arm sleeve there was the Star Ball. Now the three badges have been comprised into two and both of them placed on the right arm sleeve.
The main idea behind this change is that it leaves the left arm open for yet another sponsor logo.
UEFA foundation for children is a new program launched by UEFA in order to support children in impoverished areas of Europe.
The badges go onto the short sleeve version as well as the long sleeve version.