GWM Size Chart
| Size | Chest Circumference | Waist Circumference | Hip Circumference | Height | Head Circumference |
| 0-6 month | 15 1/2"-18" | 16"-18 1/4" | 16"-18 1/2" | 20 1/2"-27" |
15"-17 5/8" |
| 3-12 month | 17"-19" | 17 1/2"-19" | 17 1/2"-19 1/2" | 24"-30" | 16 5/8"-18 5/8" |
| 6-18 month | 18"-20" | 18 1/4"-20 1/4" | 18 1/2"-20 3/4" | 27"-34" | 17 5/8"-19 3/8" |
| 12month - 3 toddler | 19"-21" | 19"-21 1/4" | 19 1/2"-22" | 30"-38" |
18 5/8"-20" |
| 18month-4 youth | 20"-22 1/2" | 20 1/4"-22 1/4" | 20 3/4"-23 1/2" | 34"-42 1/4" | 19 3/8"-20 1/2" |
| 3 toddler-4 youth | 21"-24" | 21 1/2"-23" | 22"-25" | 38"-46 1/2" | 20"-21" |
| 4-7 youth | 22 1/2"-25 1/2" | 22 1/4"-24" | 23 1/2"-26 3/4" | 42 1/2"-49 3/4" | 20 1/2"-21 1/4" |
| 6-9 youth | 24"-27" | 23"-25" | 25"-28 1/2" | 46 1/2"-53 1/2" | 21"-21 3/8" |
| 7-10 youth | 25 1/2"-27 3/4" | 24"-25 3/4" |
26 3/4"-29 3/4" |
49 3/4"-56" | 21 1/4"-21 3/4" |
| 9-12 youth | 27 3/4"-30 1/4" | 25"-26 1/2" | 28 1/2"-31" | 53 1/2"-58 1/2" | 21 3/8"-22" |
| 10-14 youth | 27 3/4"-30 1/4" | 25 3/4"-28" | 29 3/4"-32" | 56"-61 1/4" | 21 3/4"-22 1/4" |
| 12-16 youth | 28 1/2"-32" | 26 1/2"-29 1/2" | 31"-33 1/2" | 58 1/2"-64" | 22"-22 1/2" |