B.D. GEM Children's Hat Size: 51cm With chin strap. The length of the strap is adjustable, so it can be securely worn to fit your child. The head part is also adjustable. The inside is made of mesh material, which is a nice feature since children tend to sweat a lot! It can be folded into a pouch, making it a great item to carry around in a cute way! There are no noticeable scratches or stains, but please understand that this is a used item and has been stored at home before purchasing. When shipping, it will be folded compactly and sent in simple packaging.