Sleveless Boys/Mens Crewneck Polyester/Cotton Shirt (8 Sizes, 14 Colors) Augusta Boys and Mens Sleeveless Crewneck T-Shirt. 8 Youth and Adult Sizes in 14 Colors Casual Wear, Exercise, Workout, Sportswear Shirt 50% Polyester/50% Cotton, 2-needle hemmed armholes. Two-needle set rib crew neck. Great Shirt for all Sports: Baseball, Softball, Basketball, Football, Running, etc.