Personalized Christmas Flamingo Long Sleeve T-Shirt. 'Tis the Season! This Christmas flamingo adorns a festive Santa hat, presenting colorful gifts for the holidays. Merry Christmas! 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