The two characters are Umbro. According to the relevant information, Umbro is an internationally renowned brand with a history of 91 years. It is a British football apparel manufacturer founded in 1924 by the British Humphreys brothers. The brothers combined the five English letters in their English name (HUMPHREYBROTHERS) to form the word UMBRO, and then added a diamond double rhombus pattern to become the registered trademark of UMBRO today.