Size Description: Size 0-3M(60), Romper Length: 14.5", Bust: 20.5", Recommended Age: 0-3 Months. Size 3-6M(70), Romper Length: 15.3", Bust: 21.2", Recommended Age: 3-6 Months. Size 6-12M(80), Romper Length: 16.1", Bust: 22.0", Recommended Age: 6-12 Months. Size 12-18M(90), Romper Length: 16.9", Bust: 22.8", Recommended Age:12-18 Months. Package include: 1 piece of romper.