From here: It shrunk after washing, so I'm selling it. Currently, the head circumference is 28.5cm when laid flat. I think it's perfect for those with a 56cm head. The size can be adjusted, and while it won't get bigger, it can still get smaller. I used it for one season last year. The brim is 11cm at its longest, and the back of the head is short, so it doesn't get in the way in the driver's seat. It's lightweight, breathable, and water-repellent. The color is a light, grayish-blue. The original price was around 4000 yen. It has a face-slimming effect. UV cut Foldable Mesh Made in Japan 56cm Sun visor Long brim S size No stains, tears, or odors.