Infant/Toddler
Size  Size/Age  Chest Waist Height Weight
Size/Age Range (in inches) (in inches)
0-6 Months   Up to 18" 17.75" 23"-25" 8-16 lbs.
6-12 Months   19.5" 18.5" 25"-29" 17-23 lbs.
Standard ONE SIZE     Up To 9 MONTHS UP TO 18 LBS.
Toddler Small  24 mos - 2T 20" - 22" 18" - 20" 33" - 37" 20 - 28 lbs
Toddler Large 3T - 4T 21" - 23" 19" - 21" 38" - 40" 28 - 36 lbs.
 
Children's/ Teen
Size    Chest Waist Hips Height
Size (in inches) (in inches) (in inches)
Child Small  4 - 6 22" - 25" 19" - 22" N/A 38' - 46"
Child Medium 8 - 10 27" - 30" 23" - 25" N/A 49" - 54"
Child Large 12 - 14 30" - 32" 24" - 26" N/A 55" - 60"
Teen Boy Medium Male 33" - 38" N/A N/A Up to 5'7"/150 lbs.
Teen Girl/Junior 0-9 32"-36.5" 24"-27" 33"-37" Up to 5'7"
Girl Junior 14/16 14/16 -- 3/5 31" - 33" 26 " - 27" 34" - 36" 59" - 62"