Personalized Irish Pride Shamrock St Patrick's Day T-Shirt. Celebrate your Irish pride with this bold and festive design. Featuring the word 'IRISH' in eye-catching green letters along with a shamrock, this T-Shirt - Scuba Blue is perfect for St Patrick's Day festivities or any day you want to show off your Irish spirit. 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.