Montbell Light Work Cap - Baby & Kids Hat Retail Price: ¥2,530 Size: 46-50cm Color: Pink The size can be finely adjusted at the back of the hat, so it fits the head even without a chin strap. My child never had it come off while wearing it. Recommended for children who don't like chin straps. It's in relatively good condition with no usage, but please refrain from purchasing if you are sensitive to used items, as it has been used by a child.