PSA for everyone posting asking "what are these?"
For anything from underarmour, there is a tag on the item that says "style" followed by a series of numbers. Usually this is a small tag hidden behind another tag. For shirts, this tag is usually near the bottom of the shirt. It will have a seven digit code, followed by a three digit code. The seven digit code is the "style" code which is usually marked "style" This tells us what the "model" of the item is. The three digit code following is the color code, which as you might expect...tells us the exact color of the item. A lot of times the style code will be in the system for quite some time. Posting the style code here when asking "what shirt is this?" will help figuring out what you have. I work for underarmour and will be more than happy to search style codes for anyone who asks, when I have time.