Just over here, trying to accommodate the geniuses of the world... This stretchy, light brown hat is knit from 100% recycled polyester and features a soft, sewn-on patch. It comes packaged with a removable card that reads: "Brain Warmer // For BIG Thinkers // <-- Expands As Needed-->"

All jokes aside, though, this hat will fit heads big and small! One size fits most adults.