Personalized 2nd Birthday Monster Long Sleeve T-Shirt. 2nd birthday monster. A cute monster holds a bright yellow balloon to celebrate the two year old's second birthday! Great gift for your little monster! 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