Personalized 11th Wedding Anniversary Bells Long Sleeve T-Shirt. 11th Anniversary Long Sleeve T-Shirt - Athletic Heather has pink and white bells perfect for a special occasion 11th wedding anniversary celebration. Personalize with the names of the happy couple. 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