All measurements are manual measured there may be 1-3 cm deviations,suggest chest circumference from 40-60cm wear,If they are not fit,plese contact with us for custom made. | Size | US Size | Length | For Age | Height | S | 2Y/3Y | 65 cm | 2-3 years | 90-100 cm | M | 4Y/5Y | 75 cm | 4-5 years | 100-110 cm | L | 6Y/7Y | 90 cm | 6-7 years | 110-125 cm | XL | 8Y/9Y | 100 cm | 8-9 years | 125-140 cm | XXL | 10Y/12Y | 110 cm | 10-12 years | 140-160 cm | |