| Size | Age | Height | Weight | Chest | Waist |
| 4 | 3 - 4 yrs | 39 - 41.5" | 33 - 38 lbs | 22" | 21" |
| 5 | 4 - 5 yrs | 42 - 44.5" | 39 - 44 lbs | 23" | 21.5" |
| 6 | 5 - 6 yrs | 45 - 46.5" | 45 - 55 lbs | 24" | 22" |
| 6X | 6 - 7 yrs | 47 - 48.5" | 56 - 64 lbs | 24.75" | 22.5" |
| Size | Alpha Size | Age | Height | Weight | Chest | Waist |
| 7 | S | 7 - 8 yrs | 50 - 51" | 56 - 64 lbs | 26" | 22.5" |
| 8 | S | 8 - 10 yrs | 52 - 53" | 65 - 72 lbs | 27" | 23" |
| 10 | M | 10 - 12 yrs | 54 - 55" | 73 - 81 lbs | 28.5" | 24" |
| 12 | M | 12 - 13 yrs | 56 - 57.4" | 82 - 93 lbs | 30" | 25" |
| 14 | L | 13 - 15 yrs | 58.5 - 60" | 94 - 106 lbs | 31.5" | 26" |
| 16 | XL | 13 - 15 yrs | 61 - 62.5" | 107 - 115 lbs | 33" | 27" |