25ansCLUB Hat Size: Since there's no tag, I measured it with a tape measure, and I think it's 58cm. This is a rough measurement. Brim: 7cm in the front, 6cm in the back. I washed it at home before listing it, so a slight scent of hand-washing detergent remains. I sewed about 2cm where a seam had come undone. It's hard to see, but I've taken a picture of it in the last photo. I will fold it for shipping.