Personalized I Got My First Tooth Baby Boy T-Shirt. Have a baby who just got their 1st tooth? This unique I Got My First Tooth T-Shirt - Navy Blue is a great way to commemorate this milestone event with baby blue tooth. 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.