Julie Ertz Stars Youth T-Shirt. There’s never a bad time to brag about the 4 stars. Do it comfortably and stylishly in this officially licensed tee. This s hirt is an official licensed product of the U.S. Women's National Team Players Association. NOTE: Tee is 100% cotton as lis ted unless one of the following colors. Dark gray tees are 50/50 cotton/polyester. Gray tees are 90/10 cotton/poly. All color heat her tees are 60/40 cotton/polyester.