Baby Boy One piece Long Sleeves Formal Tuxedo Romper with Bow-tie (Checkers Grey Vest) (12-18 Months (90)) Material: Cotton and Polyester. Machine wash with cold water 3-6 Months: Chest 20" Waist 20" Length 19.5" Long Sleeve 9" 6-12 Months: Chest 21" Waist 21" Length 21" Long Sleeve 9.5" 12-18 Months: Chest 22" Waist 22" Length 22.5" Long Sleeve 10.5" 18-24 Months: Chest 23" Waist 24" Length 24" Long Sleeve 11.5"