Personalized 1st Birthday Racing Car Boys Long Sleeve T-Shirt. 1st Birthday Race Car Long Sleeve T-Shirt - White has cute Vroom, I'm One quote. art c. Ne Metzger. 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