Items may not be offered in all sizes above. For best fit, use height measurement. Since all children grow at their own pace, this is the most accurate measurement. Weight should be considered when a child is above or below the average weight shown.
Measure a loop under your child's armpits, passing the tape across fullest part of chest and around shoulder blades.
Measure a loop just above hipbone, around natural waistline.
Measure a loop around widest part of your child's seat (with diapers, if applicable).