Personalized Coolest Uncle Ever Long Sleeve T-Shirt. Coolest Uncle ever! Who's the best Uncle? This Man! Two thumbs up for this aunt. Funny shirt for your favorite Uncle! 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