I bought this at the children's clothing section of AEON! 54cm With a chin strap There's also fabric at the back of the neck, so it can protect against sunburn. The fabric is soft, so I think it's easy to wash. It's a deep hat, so it was a little big for my 4-year-old, so I'm selling it. It's only been worn 3 or 4 times, and it's in good condition with no noticeable stains or pilling. However, please understand that this is a used item, and please be aware of wrinkles that may occur during shipping. No pets No smokers