US 6M size indicated. I think it feels like a size 70. My son wore these from last summer to autumn. They were cute and I loved them, as they could be worn as a single layer, but he has outgrown them, so I am selling them. I think you'll need a lot of these for washing, so I hope you can wear them a lot this season. There is some yellowing around the neck of the striped one. Please refrain from purchasing if you are sensitive to this, as this is a used item inspected by an amateur and worn by a child. 100% cotton - Color: Blue - Design: Whale pattern - Size: ~95cm - Material: Cotton Thank you for looking.