Personalized Shamrock Chick T-Shirt. A cute yellow chick holding a shamrock is a unique gift design for St. Patrick's Day, Irish and Celtic festivals, birthdays and holidays. Everyone loves our Custom T-Shirts! 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.