Personalized Train Our Little Caboose New Baby Long Sleeve Creeper. Cute Kids Our Little Caboose Long Sleeve Creeper - White is just right for the new baby that is the last addition to the family. Colorful children's train caboose design. 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.