Pumpkin Costume Size not indicated. Flat measurements: Shoulder width: 45 cm Length: 53 cm My child wore this when they were 4 years old. They wore it poncho-style over a long-sleeved T-shirt and leggings. It's very cute! ☺︎ I think it can be worn by children aged 3 to 5. The hat also has elastic, so it's secure. There is a feeling of wear. Please understand before purchasing. Thank you for looking.