Under Armour tank top. Size is LG. I am also listing this on other sites, so please comment before purchasing. Thank you. Product Details Project Rock, a collection for athletes who continue to challenge their limits, supervised by Dwayne Johnson himself. Moisture Control: Quickly absorbs sweat, wicks it away to the outside, and keeps the athlete's body dry at all times. Specs Fit Loose Material 60% cotton, 40% polyester Country of Origin Vietnam Product Number 1383195