Personalized Bulldozer 1st Birthday Toddler Long Sleeve T-Shirt. 1st Birthday Bulldozer Toddler Long Sleeve Tee - White has number 1 and room to add a personalized name for your one year old on their birthday party day. A classic for Fall, Winter and Spring, these long sleeve toddler t-shirts are sure to be a staple in your child's wardrobe. Whether layered or alone, this t-shirt is soft yet durable enough to stand up to your toddler's playtime demands.