One is the Scala Classico men’s crushable felt Outback hat, which she posted — along with a slew of others, along with links to buy them — on her Instagram story.

Over the last 12 months, I’ve half-heartedly looked for the foam hat-sizing tape the Carmel Hat Co. used to adjust the size of my straw Scala hat, but to no avail. One month I did run across an ...