Personalized It's My 1st Cinco De Mayo Newborn Layette. 1st Cinco De Mayo Newborn Layette - White has big sombrero for baby's 1st fiesta. Celebrate! 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