Starr King Staff - Upright Stallion T-shirts are available in heather navy, navy and black with white print logo or white and light grey heather shirts with navy print. The navy shirts are made of 4.3 oz-100% combed ring spun cotton/polyester. The heathered navy, black, white and light grey heather are all 4.3 oz.-50/50 combed ring spun cotton/polyester. They all have combed ring spun cotton which allows for a softer, lighter and more comfortable feel.