The most popular sizes of these products are ONE SIZE, 6/9 Months, 9-12 Months, 6-9 Mo, 9-12 Mo, 3-6 Months, S, 12-18 Months, 3-6 Mo, 12-18 Mo, M, XL, 2XL, 0-3 Months, L, 0-3 Mo, 18-24 Mo, 18/24 Months, 7, 4-5 Years, 3 YEARS, 8, 3-4 Years, åç a 39. All sizes