XS S M L XL 3/6 6/9 12/18 10/14 18/24 6/8 9/12 8/10 10/12 12/14 6/7 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 8 9 10 12 14 18 24 28 29 30 31 32 33 34 35 36 37 38 39 40 14+ 10.5C 11C 11.5C 12C 12.5C 13C 13.5C 12K 12.5K 13K 13.5K 12.5K M 3.5 Kids 1 M 1.5 M 3-6 mths 6-9 mths 9-12 mths 12-18 mths 18-24 mths 6X 1Y 1.5Y 2Y 2.5Y 3Y 3.5Y 4Y 4.5Y 5Y 5.5Y 6Y 6.5Y 7Y 4 yrs 6 yrs 7 yrs 8 yrs 9 yrs 10 yrs 11 yrs 12 yrs 13 yrs 14 yrs 16 yrs III T4 T5 T6 U