I want to purchase this jacket for my son but it has this symbol on it. Can you help? I have a picture!
悟 (wù) is a buddhist concept, especially in chán (禅), and means "realize", "awaken", especially in the word 悟空 (wùkōng): awake in the emptiness of existence.

The monkey 孙悟空 (Sun Wukong) is a character in the classic novel Journey to the West, and is often portrayed in Chinese and East Asian culture. The same goes for many other buddhist concepts.

In this instance, it is related to Japanese manga.