Hot Biscuits reversible hat! It doesn't originally come with a chin strap. Size can be adjusted. ● Size: No tag, approximately 45cm Please note that there may be slight errors due to amateur measurements. ● Condition: I wore it with care, but there is one stain on the top. Please check the photos. Otherwise, I think it's clean, but please understand that it is a used item before purchasing. ● Other notes: I have stored it at home. Please check the details in the photos.