This was a gift. I tried it on once indoors, but it was never used and my child outgrew it. It has a cute design, so I hope someone will use it. The size adjustment part is made of elastic, so it's safe for children and won't hurt them ☺︎ When shipping, I will put it in a plastic bag for waterproofing, then into a paper bag. I will not compress it to prevent the brim from deforming, so please rest assured ☆彡