This hat features the jawless skull that is the emblem of the Ninth House in Tamsyn Muir’s fabulous Locked Tomb Series (Gideon the Ninth, Harrow the Ninth, Nona the Ninth, and Alecto the Ninth). It additionally showcases the beloved quote “One flesh, one end” for Gideon and Harrowhark fans. If you’re hoping to advertise your love for lesbian necromancers, look no further than this hat!