Personalized Happy Holidays Long Sleeve T-Shirt. Happy Holidays! A cute, smiling snowman with a top hat, scarf, and mittens waves to everyone and wishes them Happy Holidays! 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