Order by chest size: Newborn=15", 3 Months=16 1/2", 6 Months=17 1/2", 9 Months=18", 12 Months=18 1/2", 18 Months=19 1/4", 24 Months=20" * 2 piece set includes romper and bonnet. * Long sleeves, long legs. Entre-deux & covered button details at the waist. * Fabric: 100% cotton. Machine wash, gentle cycle. Tumble dry on low heat. * Made in the USA. Ships by end of next business day.