Size: Units (inches/pounds) Size S: Shoulder width is 16.93 inches, chest circumference is 39.37 inches, sleeve length is 24.80 inches, length is 25.59 inches. Recommended weight is 55-65 kilograms (121.25-143.3 pounds).  Size M: Shoulder width is 17.32 inches, chest circumference is 41.73 inches, sleeve length is 25.5