Personalized 1st Father's Day Baby Boy Long Sleeve T-Shirt. It's my Daddy's 1st Fathers Day Long Sleeve T-Shirt - Pink has an adorable baby boy in a boat with blue heart sail. 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