Rothco Thin Blue Line & Thin Red Line T-shirt S. The US Flag Shirt is a made of a soft cotton/polyester blend. ' Specifications for Rothco Thin Blue Line & Thin Red Line T-shirt: Manufacturer: Rothco Sleeve Length: Short Age Group: Adults Apparel Fit: Regular Gender: Male Color: Black Shirt Style: T-Shirt Fabric/Material: 60percent Cotton 40percent Polyester Neckline: Crew Features of Rothco Thin Blue Line & Thin Red Line T-shirt Material: Polyester Material Specs: 60percent Cotton 40percent Polyester Package Contents: Rothco Thin Blue Line & Thin Red Line T-shirt Rothco Thin Blue Line & Thin Red Line T-shirt Small 61660-S