Personalized 2nd Birthday Two Year Old Farm T-Shirt. Whether you're looking for a special outfit for the birthday boy or a unique gift for a two-year-old, our second birthday collection is a great choice. 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.