Personalized 45th Anniversary Gift Idea Long Sleeve T-Shirt. Pretty 45th Anniversary pink hearts design to celebrate 45 Years Together comes on an Anniversary design Long Sleeve T-Shirt - Black gift. 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