The weight value on this chart is approximate, and should not be used to determine your  child's size.  Please check your child's measurements to get a proper fit.

SIZE	WEIGHT	LEGS	RISE	WAIST
Small	7 - 15 lbs.	4"- 11"	13"	9"- 17"
Medium	13 - 30+lbs.	6"- 12"	16.5"	12"- 20"
Medium Long	16 - 30 lbs.	7"- 14"	17.5"	14"- 22"
Large	25 - 35+lbs.	9"- 16"	18.0"	16"- 24"

How to measure your child...

Waist measurement = Measure 1" below the belly button. Wrap the tape measure around the belly (snug but not too tight!) to make a complete circle.

Legs = Measure as close to the groin area as possible, where the crease is, between the legs and the groin.  DO NOT measure the fatest part of the thigh...mid thigh region.

Rise = With a diaper on the baby, measure from 1 " below the belly button, down through the crotch area, and up the top of the bum, where the top of the diaper should be on the back of the waist. 

With all sizes....

Keep in mind that waist measurements and leg measurements are adjusted by the upper snaps and lower snaps.  There are four snap settings. This will allow you to adjust the legs tighter (in comparison to the waist) by one snap, or loser by one snap, and visa versa.  You will not be able to obtain the smallest setting on legs and the largest setting on waist at the same time.