Personalized Book Lovers Gifts Unicorn Librarian Long Sleeve T-Shirt. Unicorn sits on a stack of colorful books on this gift for a bookworm, librarian, book lover. 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