Personalized Train Our Little Caboose New Baby Newborn Layette. Cute Kids Our Little Caboose Newborn Layette - Light Blue is just right for the new baby that is the last addition to the family. Colorful children's train caboose design. 100% combed ringspun cotton 5.8 ounce 1×1 baby rib sleeper. 3/8" flatlock binding at envelope neck and cuffs. Back sleeve flap to protect hands. Elastic opening at bottom. Infant: 0-3 Months