The most common sizes in which these products are manufactured include ONE SIZE, 12-24 Month, 9-12 Months, 9-12 Mo, 3-6 Months, 12-18 Months, 3-6 Mo, 6-12 Month, 6/9 Months, 12-18 Mo, 18/24 Months, 6-9 Mo, 2-3 Years, 18-24 Mo, 2 Toddler, 0-3 Months, 0-3 Mo, 0-12 Month, 1-3 Year, 2-4 Year, 3-4 Years, 3-5 Year, 0-6 Month, 3 Toddler alebo 4-5 Years. All sizes