Personalized Life's Ducky 1st Birthday Long Sleeve T-Shirt. 1st birthday LIFE'S JUST DUCKY WHEN YOU'RE 1 Long Sleeve T-Shirt - White with adorable baby duck. 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