Personalized Merry Christmas Long Sleeve T-Shirt. Merry Christmas! A big pile of presents rests on an evergreen bough with snowflakes and ornaments. Festive holiday wear! 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