Men's Size Large. 

Blizzard Employee Only, and then only members of the Battle.net Team who were around for this single release of a shirt. It's called PHEONIX because it's the code word used for the Battle.net Launcher/Battle.net during a redesign phase. 

On the top middle of the back is "Battle.net." 

This was a team shirt for Battle.net team members only. 

Clothing Items have been stored upwards of 24 years in bug resistant box in a smoke-free home. It’s recommended to wash before using your favorite laundry soap/softener should you decide to wear them to remove the storage scent.