1-2 years: Chest to fit 22-24 inches

3-4 years: Chest to fit 24-26 inches

5-6 years: Chest to fit 26-28 inches

Size S: Chest - 33.9, Waist - 26, Hips - 37 inches

Size M: Chest - 35.4, Waist - 27.6, Hips - 38.6 inches

Size L: Chest - 37.8, Waist - 29.9, Hips - 40.8 inches

Size S: Chest - 34.5 inches

Size M: Chest - 37 inches

Size L: Chest - 39.5 inches