Purchased online previously. It's a large size, so I'm offering it to someone who can use it (・∀・) I think it was a limited edition of something, but I forgot what. Something Japanese?? (It says "Japan Collection") There's no size indicated, so I measured it myself. Approximately 58cm around. There may be some error. It's not adjustable. Regarding the size, I'm an amateur at measuring, so please be aware of potential inaccuracies. Color: White Not mesh fabric. No claims, no returns. When shipping, I may remove the hat form and slightly compress it. Please understand.