Personalized My first St Patrick's Day Baby's First St Patricks Long Sleeve T-Shirt. Ideal for gifting or as a keepsake, this adorable apparel is a wonderful way to commemorate your baby's first St. Patrick's Day. Dress them in style and let them join in the fun of this beloved holiday with a touch of charm and joy. 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