Billabong Kids Surf Hat This is a kids' free size, but I used it myself instead of a child, so I think even women with smaller heads can wear it(^^) It comes with a sunshade cover and can be stored. It can be adjusted on the back. Approx. brim 6cm, height 8cm, inner circumference 56cm The material is 100% polyester. I used it several times during one season. Other than the chin strap being stretched, there is no particular dirt, and I think you can still use it(^^)♩ Please comment if you have any questions.