The most common sizes in which these products are manufactured include 9-12 Months, 12-18 Months, 6/9 Months, 3-6 Months, ONE SIZE, 18/24 Months, 5-6 Years, 40, 6-9 Mo, 9-12 Mo, 12-18 Mo, 4-5 Years, 0-3 Months, 3-6 Mo, 3-4 Years, 3 YEARS, 18-24 Mo, 2 YEARS, 39, 4 Toddler, 41, 0-3 Mo, 3 Toddler, 38 a 6-7 Years. All sizes