Kid's 4 - 7 Size Chart

Size Height Chest Waist
Kids S (4) 39" - 41 ½" 22 ½" - 23" 32 ½ - 37 lbs.
Kids M (5-6) 32" - 46 ½" 23 ½" - 25" 37 ½ - 47 lbs.
Kids L (7) 47" - 48 ½" 25 ½" - 26" 47 ½ - 54 lbs.