Y'all Need Jesus cotton/poly blend Small: 34-37" Chest, Medium: 38-41" Chest, Large: 42-45" Chest, XL: 46-49" Chest, XXL: 50-53" Chest, XXXL: 54-57" Chest All of our products come with an oh so cute and tiny shoulder tag on the back so, front or back, everyone will know you are Rockin' that Rubbish!