Personalized 1st Birthday Monster Long Sleeve Creeper. 1st birthday monster Long Sleeve Creeper - Natural & Brown w Ears. A cute monster holds a bright yellow balloon to celebrate the one year old's first birthday! Great gift for your little monster! 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.