Algonquins cat ear hat with skull button. The button looks like it's supposed to be detachable, but I can't get it off the hat easily. There used to be white paint on the button, but I scraped it off since it was cracking. Purchased secondhand by me and tried on. It's too small for my head, measurements listed below! There's not much stretch to it unfortunately.

Measurements:
Width: 26 cm
Height: 21 cm