01 XS 02 S 03 M 04 L 05 XL 06 S/M L/XL All Size (S-XL) 22 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 0-3 Months 3-6 Months 6-9 Months 9-12 Months 12-18 Months 18-24 Months 2-3 Year 3-4 Year 4-5 Year