South Bend, Indiana, Mayor Pete Buttigieg is, at 37, the youngest Democrat running for the presidency in 2020, and don’t you forget it.

The mayor referenced his age several times during Tuesday evening’s Democratic debate on CNN, which featured 10 of the 20 qualifying candidates vying to unseat President Donald Trump. Buttigieg has quickly made a name for himself among the coalition of front-runners, facing off against septuagenarian Sens. Bernie Sanders (I-Vt.) and Elizabeth Warren (D-Mass.) and casting himself as a deft political opponent despite his youth.

Click Here: Sports Water Bottles

The Constitution mandates that an American president be 35 or older to sit in the Oval Office, and Buttigieg fits the bill. But the mayor still really wants you to know how close to the cutoff he is, even if he says “we can have great presidents at any age.”

Here are some of Buttigieg’s reminders of his relative youth.

He’ll be in his 40s when climate change gets really bad.

He knows about the plight of disappearing blue-collar jobs.

His generation has lived through an America in crisis.

But despite all that, his age doesn’t matter.