For accurate sizing, please follow these guidelines:
Height: Measure your child without shoes, feet together and back to the wall. Take measure from the floor to top of the head.
Chest: Place the tape measure under your child's arms and around the fullest part of his or her chest. Tape should be comfortably loose.
Waist: Measure your child in his or her underwear. At their natural waistline, place one finger in between the tape and your child's body.