Personalized Penguin 1st Birthday Long Sleeve Creeper. Penguin holds a birthday balloon with a 1 on it. Cute on a onesie! Happy 1st b-day one 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.