Size Age Height Weight Chest Waist
4 XS 3 - 4 38 - 41" 35 - 39 lbs 21 - 22" 21.5 - 22"
5 S 4 - 5 41 - 44" 39 - 45 lbs 22 - 23" 22 - 22.5"
6 S 5 - 6 44 - 46.5" 45 - 50 lbs 23 - 24" 22.5 - 23"
7 M 6 - 7 46.5 - 49.5" 50 - 58 lbs 24 - 25.5" 23 - 23.5"
8 M 7 - 8 49.5 - 52" 58 - 68 lbs 25.5 - 26.5" 23.5 - 24.5"
10 L 8 - 9 52 - 55.5" 68 - 87 lbs 26.5 - 27.5" 24.5 - 25.5"
12 L 9 - 10 55.5 - 58.5" 87 - 100 lbs 27.5 - 28.5" 25.5 - 26.5"
14 XL 10 - 11 58.5 - 61.5" 100 - 110 lbs 28.5 - 30.5" 26.5 - 28"
16 XXL 11 - 12 61.5 - 64" 110 - 120 lbs 30.5 - 32" 28 - 29.5"
18* XXXL 12 - 13 64 - 65.5" 120 - 125 lbs 32 - 33.5" 29.5 - 31"