Manufacturers Sizing Chart:
Size 00 fits someone between 4'4" to 4'5" (child size 10 - 12) and weight between 60 lb. to 85 lb.
Size 0 fits someone between 4'6" to 4'8" (child size 12-14) and weight between 85 lb to 100 lb
Size 1 fits someone between 4'9" to 5'1" and weight between 100 lb. to 125 lb.
Size 2 fits someone between 5'2 to 5'5" and weight between 125 lb to 150 lb
Size 3 fits someone between 5'6" to 5'10" and weight between 150 lb. to 185 lb.
Size 4 fits someone between 5'11 to 6' and weight between 185 lb to 210 lb