Castano Hat Flight Cap Ear Flaps Color: Beige Size: 57-59cm ⚠︎ There is elastic in the back, so I think the size can be adjusted by 2cm due to its stretch. There is nothing else to adjust the size besides the elastic. I wore it once, washed it, and then stored it in the closet. It smells a little dusty. Please understand that this is a used item and has been stored at home. I plan to fold it and ship it via Yu-Packet Post. Instant purchase is OK. Silent transaction is OK.