Personalized Bulldozer 1st Birthday Long Sleeve T-Shirt. 1st Birthday Bulldozer Long Sleeve T-Shirt - Pink has number 1 and room to add a personalized name for your one year old on their birthday party day. 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