Personalized Irish Rock Long Sleeve T-Shirt. A dancing rock holding a shamrock is a humorous design for St. Patrick's day, Irish and Celtic festivals and birthdays. Pre-shrunk 100% cotton 6.1 ounce long sleeve t-shirt. Double-needle stitched neckline and sleeves. Quarter turned. Shoulder-to-shoulder taping. Adult: S, M, L, XL, 2XL, 3XL