Personalized St Patrick's Day Follow the Raibow T-Shirt. Whether you're searching for the perfect outfit for a celebration or a thoughtful gift for a friend, our "Follow the Rainbow" apparel is sure to delight. Embrace the luck of the Irish and make a statement this St. Patrick's Day with a design that brings smiles and good vibes wherever you go! 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.