Personalized Superhero 2nd Birthday Long Sleeve Creeper. Happy 2nd birthday! Celebrate your baby's second b-day with this cute I'm 2 super hero design. Happy Birthday two-year-old! 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.