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 constantly challenge their limits, supervised by Dwayne Johnson himself. Moisture Control: Quickly absorbs sweat and releases it to the outside, keeping the athlete's body dry at all times. Specs Fit Loose Material 60% Cotton, 40% Polyester Country of Origin Vietnam Product Number 1383195