Hats Street MEN & BOYS Ladies, Girls Caps Newsboy Caps Hunting Caps Measured with a measuring tape. Photos are uploaded, so please check them. Measured larger in the 9th photo. Measured smaller in the 10th photo. Displayed size: 57cm Men's Boys Ladies Girls Size Men's size: About M I think I am M size. It's the perfect size for me. The size is shown in the photos. Please look carefully and confirm before purchasing!! There are sweat stains on the inside. Please check the photos. We offer no guarantees. Also, it is listed elsewhere, so before pressing the purchase button, please confirm if it is in stock!! We are not accepting price offers. To reduce the thickness, I will flatten it as much as possible. It may wrinkle where you put it on. I will crush it when putting it in the mailbox. It should return to its original shape, but there is a possibility that it will remain wrinkled. Please understand!!