Black bucket hat made of synthetic leather, with an inner circumference of approximately 57cm, featuring a stylish design. - Color: Black - Material: Synthetic leather - Inner Circumference: Approximately 57cm Thank you for viewing. The inner circumference hasn't been measured precisely. It's roughly 55-57cm? It will be folded up small for shipping. The inside is probably cotton (is it reversible?). I'm selling it because the size didn't fit me. I haven't used it outside, but it has been stored at home. Thank you.