This awesome night suit for kids is sure to become their new favorite sleepwear! They'll want to wear this comfortable night suit all day long, around the house. Size And Age: Small: Chest10, length14, age 1 year. Medium: Chest 11, length, 16 age 2/3 years. Large: Chest 13, length 18, age 4/5 years. XL: Chest 14, length 20, age 5/6 years. XXL: Chest 15, length 22, age 7/8 years.