Personalized Irish Flag Holiday Logo St Patricks T-Shirt. Green, white and orange Irish Flag T-Shirt - Navy Blue is perfect for showing your Ireland pride. Add a name or slogan with the designer tool for a personalized Irish gift. 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.