Personalized Merry Christmas Long Sleeve T-Shirt. It's the most wonderful time of the year. Merry Christmas and Happy New Year! Santa is on the way, Ho! Ho! Ho! 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