Personalized Mail Carrier Postal Worker Long Sleeve Creeper. I'm a mail carrier lets just assume I know where I'm going funny mailman Long Sleeve Creeper - Natural for a post office employee. 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.