Personalized Kindergarten Rocks Newborn Layette. Back to school Newborn Layette - White says KINDERGARTEN ROCKS in colorful primary colors. Keepsake and photo op gifts for kindergartners first day of school or kindergarten teachers. 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