The left chest logo is the top round logo which reads "2nd Assault Amphibian Battalion - Courthouse Bay, CLNC" wrapped around the eagle, globe and anchor. The full back logo is below and is the actual 2nd Tracs unit logo. I added "YAT YAS" above on the back logo.
You can get the t-shirt in either black or olive drab. The logos are gold. Semper Fi