Personalized Think Libertarian Long Sleeve T-Shirt. I think, therefore I am a Libertarian! Think for yourself. Take care of yourself. That's the Libertarian way. Great gift for your favorite Libertarian! Pre-shrunk 100% cotton 6.1 ounce long sleeve t-shirt. Double-needle stitched neckline and sleeves. Quarter turned. Shoulder-to-shoulder taping. Adult: S, M, L, XL, 2XL, 3XL