Personalized 1st Birthday Cute Dinosaur Long Sleeve Creeper. It's your child's first birthday, and this adorable dinosaur is celebrating! Adorable tee shirt for baby's 1st birthday. For chillier weather, dress baby in this soft long sleeve creeper in a great fitting 1x1 baby rib. 5.0 oz., 100% combed ringspun cotton, 1x1 baby rib. White is sewn with 100% cotton thread, Flatlock seams, Double-needle stitched rib binding on neck, shoulders, sleeves and leg openings,Reinforced three-snap closure on binding.