Baby Boy One piece Formal Tuxedo Romper Suit Black (3-6 Months) Style: Off-White Shirt with Black Vest with Strips Pattern; Material: Cotton and Polyester; Machine wash with cold water 3-6 Months: Chest 18" Waist 18" Length 17" 6-12 Months: Chest 19" Waist 20" Length 17.5" 12-18 Months: Chest 20" Waist 21" Length 18.5" 18-24 Months: Chest 22" Waist 21" Length 20"