Product name: cold cap in winter Material: wool, polyester Where: white+pink+military green+navy blue+dark greyProduct size: 20 * 17cm, suitable for 54-58cm head circumference, female adults: 56-57cm head circumference normal just fine, male adults: 57 * 58cm head circumference normal just fine Knitting is elastic. It is the best fashion item in autumn and winter. [Maintenance] Note: No soaking/machine washing/brushing is allowed. It is recommended to wash and protect the pad cloth professionally when ironing. It is recommended to pull the hat over the ear, cover the ear or roll it up more, so that it can have a dome effect and high elasticity. It is recommended to wear it under 58cm of the head circumference