Standard size fits 56-57-58-59 cm head dimensions. size chart: 55cm(xs) - 56cm(s) - 57cm(s/m) - 58cm(m) - 59cm(l) - 60cm(l/xl) - 61cm(xl) how to take head size? when you measure your head circumference 1 cm above your eyebrow, the measurement you find is your head measurement. . main fabric inner fabric 75.00% cotton. 25.00% polyester . storage advice store in a dry and ventilated place. . thanks to its special component fabric, it is very light and pleasant to wear. it is produced from 1st class quality 100% cotton gabardine fabric. thanks to its fabric structure and quality, it is suitable for use in all seasons. it is a standard size, it is produced in an adjustable way from the back. it is suitable for all men and women adults. it does not sweat as it is 100% cotton. the products will be sent in their special packages and carefully packaged. please click on our store from the hat to see. please note that there will be a difference in quality of our products that you come across with imitations and make sure that the seller store is from the hat. we understand from the hat. we protect our customers with our quality policy. Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.