Personalized Happy Halloween Cat Long Sleeve T-Shirt. Happy Halloween! A cute black cat with a smiling witch hat, bubbling purple cauldron and bat friend wish everyone a happy Halloween! 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