Personalized My first St Patrick's Day T-Shirt. Gift this special piece to new parents or add it to your baby's wardrobe for a memorable celebration. It's not just clothing; it's a keepsake that will remind you of those precious early moments. Make this St. Patrick's Day unforgettable with a touch of charm and whimsy! Wardrobe essential for looking good, 24/7. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar. Shoulder-to-shoulder taping. Double-needle stitched sleeves, bottom hem and front neck. Note: greys are a cotton/polyester blend.